Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Electronic Resource  (1,984)
  • Loose Leaf
  • 2000-2004
  • 1990-1994  (1,984)
  • 1991  (1,984)
  • Life and Medical Sciences  (1,901)
  • Magnetic resonance imaging
Source
Material
  • Electronic Resource  (1,984)
  • Loose Leaf
Years
  • 2000-2004
  • 1990-1994  (1,984)
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Prospective comparative study of magnetic resonance imaging versus transrectal ultrasound for preoperative staging and follow-up of rectal cancer (1991)
    Springer
    Diseases of the colon & rectum 34 (1991), S. 1068-1072 
    Details
    ISSN: 1530-0358
    Keywords: Rectal cancer ; Staging ; Transrectal ultrasound ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The efficiency of magnetic resonance imaging (MRI) and that of transrectal ultrasound (TRUS) were compared in preoperative staging of 15 patients with rectal cancer and in postoperative follow-up of 12 patients. Thirteen of the 15 patients evaluated for preoperative staging were operated on. Preoperative staging and pathologic finding were identical in 11 patients (84.6 percent) examined by TRUS and in 10 patients (76.9 percent) examined by MRI. Recurrent cancer was detected in 3 of 12 patients in the follow-up group. MRI was able to diagnose correctly 10 of 12 patients (83.2 percent), one patient was misdiagnosed, and in one patient the MRI could not distinguish between fibrous tissue and recurrent cancer. TRUS diagnosed correctly only 5 of 12 patients (41.6 percent). One was falsely diagnosed, and, in 6 patients (50 percent), this examination could not differentiate between fibrous tissue and recurrent tumor. According to our results, both MRI and TRUS have a place in the preoperative staging of patients with rectal cancer. The main differences between the two methods were in the differential diagnoses of fibrous tissue and recurrent cancer. MRI being more specific in detection of recurrence.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02050063
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Neurilemoma of the retroperitoneum (1991)
    Springer
    Journal of molecular medicine 69 (1991), S. 228-231 
    Details
    ISSN: 1432-1440
    Keywords: Neurilemoma ; Retroperitoneal tumor ; Ultrasonography ; Computed tomography ; Magnetic resonance imaging ; Catecholamines
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A case is presented in which suprarenal neurilemoma was associated with paroxysmal attacks of hypertension, headache and sweating with elevated plasma and urinary catecholamines. Pheochromocytoma was excluded using an overnight clonidine suppression test. Ultrasonography, computed tomography and magnetic resonance imaging, which showed cystic mass with a pedicle continuing to the widened intervertebral foramen, were helpful for the preoperative diagnosis of retroperitoneal neurilemoma. The excised tumor was revealed to be benign neurilemoma and contain detectable levels of adrenaline, noradrenaline and dopamine. The relationships between tumor catecholamines and clinical manifestations will be discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01646948
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Detection of bone marrow infiltration by non-Hodgkin's lymphoma — Comparison of histological findings, analysis of gene rearrangements, and examination by magnetic resonance imaging (1991)
    Springer
    Journal of molecular medicine 69 (1991), S. 345-350 
    Details
    ISSN: 1432-1440
    Keywords: Histological examination of bone marrow ; Staging non-Hodgkin's lymphoma ; Analysis of gene rearrangements ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The histological examination of bone marrow specimens is one of the standard procedures in staging non-Hodgkin's lymphoma. To investigate the validity of a conventional unilateral iliac crest biopsy, we performed a prospective study comparing histological findings with analysis of gene rearrangements in bone marrow samples and magnetic resonance imaging of bone marrow. Twenty-seven consecutive patients with non-Hodgkin's lymphoma (ten with high grade, seventeen with low grade) were studied. In twelve patients, histological examination revealed bone marrow infiltration. Results of histology and magnetic resonance imaging were discordant in three of the twenty-seven patients. With magnetic resonance imaging, suspected infiltration was found in two patients without histological evidence for bone marrow involvement in the disease. In one patient, an infiltration was described by histology but MRI revealed no pathological findings. In this case, DNA analysis confirmed bone marrow infiltration by detection of a clonal rearrangement of the immunoglobulin heavy chain gene. Analysis of gene rearrangements was performed in ten patients. As examined by histology, five of them had bone marrow involvement in the disease and five had not. In all these cases, analysis of gene rearrangements confirmed the histological findings. Our data show that, despite the small volume of bone marrow specimens, the sensitivity of an iliac lymphoma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02115781
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Magnetic resonance imaging in female stress incontinence (1991)
    Springer
    International urogynecology journal 2 (1991), S. 115-118 
    Details
    ISSN: 1433-3023
    Keywords: Magnetic resonance imaging ; Stress incontinence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A new technique is described for determination of the anatomy of the urethrovesical junction using magnetic resonance imaging. Using this technique it is possible to precisely define the anatomical relationships of the urethra and bladder base within the pelvis. It is non-invasive and non-ionizing. This report demonstrates its usefulness in Urogynecology.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00376577
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Calcific tendinitis of the vastus lateralis muscle (1991)
    Springer
    Skeletal radiology 20 (1991), S. 21-23 
    Details
    ISSN: 1432-2161
    Keywords: Calcific tendinitis ; Vastus lateralis muscle ; Parosteal soft tissue calcification ; Computed tomography ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Three cases of calcific tendinitis occurring at an unusual site (vastus lateralis tendon) are described. Findings on conventional radiography and computed tomography together with the clinical history are characteristic for this disorder and reflect its natural evolution. The actual role of magnetic resonance imaging seems limited to excluding neoplasm and to demonstrating inflammatory changes better in the early stages of disease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00243716
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    MRI appearance of femoral head osteonecrosis following core decompression and bone grafting (1991)
    Springer
    Skeletal radiology 20 (1991), S. 103-107 
    Details
    ISSN: 1432-2161
    Keywords: Magnetic resonance imaging ; Avascular necrosis ; Hip core decompression
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We used magnetic resonance imaging (MRI) to evaluate retrospectively 32 hips with avascular necrosis of the femoral head before and after core decompression and bone grafting. At a median follow-up time of 15 months, 4 of 9 large lesions had undergone femoral head collapse; 2 small lesions had decreased in size; and 14 small, 6 moderate, and 5 large lesions were unchanged. One hip with biopsy-proven avascular necrosis had diffuse marrow edema which resolved after surgery. The signal pattern within the lesions was analyzed in 17 hips. Fifteen lesions were unchanged, while one fatlike lesion became fibrous-like and one edema-like lesion resolved. Analysis of the femoral neck marrow signal in one patient revealed that premature fatty marrow conversion had reverted to hemopoietic marrow 2 years after surgery. Most lesions that appeared stable on MRI were clinically stable or improved. MRI can demonstrated changes in size and signal characteristics as well as femoral head collapse after core decompression and bone grafting. Changes in the surrounding marrow signal, including resolution of marrow edema and reconversion from fatty to hemopoietic marrow, can also be detected.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00193820
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Imaging of the absent cervical pedicle (1991)
    Springer
    Skeletal radiology 20 (1991), S. 325-328 
    Details
    ISSN: 1432-2161
    Keywords: Vertebra ; Pedicle ; Congenital anomaly ; Cervical spondylolisthesis ; Magnetic resonance imaging ; Computed tomography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The absent cervical pedicle is an interesting congenital anomaly which has been described in several previous case reports. Of primary importance is its recognition to avoid confusion with more clinically significant abnormalities such as fracture or an enlarged neural foramen. Although many cases can be diagnosed from the plain radiographic findings alone, it is occasionally necessary to employ another imaging modality for more definitive evaluation. We describe two cases of absent cervical pedicle imaged with computed tomography and magnetic resonance imaging.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01267656
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Femoral infarction following intraarterial chemotherapy for osteosarcoma of the leg: a possible pitfall in magnetic resonance imaging (1991)
    Springer
    Skeletal radiology 20 (1991), S. 329-332 
    Details
    ISSN: 1432-2161
    Keywords: Magnetic resonance imaging ; Bone tumors ; Osteosarcoma ; Intra-arterial chemotherapy ; Complication ; Bone infarction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Bone infarction of the distal femur is reported in two patients with osteosarcoma of the leg (1 tibia, 1 fibula) treated by preoperative chemotherapy including intraarterial chemotherapy (IAC) by Cis-platinum. Both patients were examined by magnetic resonance imaging before chemotherapy and again prior to limb salvage surgery. The location of these lesions in the distal femur must suggest bone infarction especially if the tumor has decreased in size under treatment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01267657
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Time-dependent scar enhancement in magnetic resonance imaging of the postoperative lumbar spine (1991)
    Springer
    Skeletal radiology 20 (1991), S. 333-337 
    Details
    ISSN: 1432-2161
    Keywords: Postoperative spine ; Postoperative scar ; Time-dependent enhancement ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Magnetic resonance imaging (MRI) has become a principal modality in the evaluation of the postoperative lumbar spine. Gadolinium-diethylenetriaminepentaacetic acid (Gd-DTPA) can often facilitate differentiation of scar from recurrent disc herniation according to established criteria. Scar has been believed to enhance predictably. We reviewed the contrast-enhanced MR scans of 44 patients who were examined for recurrent back pain following disc surgery and attempted to assess the enhancement characteristics of scar as a function of the time interval between initial surgery and the imaging study. In 44 patients, scar was believed to be present at 32 of 49 disc levels. The degree of enhancement was related to the postoperative interval; those studies performed no later than 9 months after surgery tended to exhibit the greatest degree of enhancement. Surgical confirmation of these MRI findings was available in 12 patients. In patients examined long after surgery, scar enhancement may be less intense than in those examined shortly after surgery, or even nonexistent. This temporal factor should be considered when using contrast material to differentiate scar from recurrent disc herniation in postoperative examinations of the lumbar spine.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01267658
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    The wrinkled patellar tendon: an indication of abnormality in the extensor mechanism of the knee (1991)
    Springer
    Skeletal radiology 20 (1991), S. 181-185 
    Details
    ISSN: 1432-2161
    Keywords: Quadriceps tendon rupture ; Patellar tendon ; Extensor mechanism of knee ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Rupture of the quadriceps tendon is an uncommon condition which requires early diagnosis and treatment to avert prolonged disability. In four patients who had surgically confirmed quadriceps tendon rupture, lateral radiographs of the knee and/or sagittal magnetic resonance (MR) images demonstrated a corrugated appearance to the patellar tendon. Sagittal MR images of the knee following patellectomy in one patient and radiographs of a transverse fracture of the patella in another also demonstrated this appearance. MRI has superb contrast resolution which provides optimal visualization of the contour of the patellar tendon on sagittal images. A retrospective review of 50 consecutive knee MRI examinations was carried out to evaluate the appearance of the normal patellar tendon. In 49 of 50 patients, the sagittal images demonstrated a straight or nearly straight patellar tendon. A corrugated appearance of the patellar tendon on sagittal images indicates a reduction in the normal tensile force applied to it and indicates the need for careful evaluation of the patella and quadriceps tendon mechanism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00241662
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 11
    Electronic Resource
    Electronic Resource
    Transarticular invasion of joints by bone tumors: hypothesis (1991)
    Springer
    Skeletal radiology 20 (1991), S. 279-283 
    Details
    ISSN: 1432-2161
    Keywords: Tumors of bone ; Joint invasion ; Computed tomography ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Eight bone tumors with associated transarticular invasion of the sacroiliac joints are described. All invaded the true synovial joint and spread to the opposing bone. One tumor was benign, and the other seven were malignant. Five of the seven were primary and two were metastatic cancer. One, a myeloma, invaded the disc spaces between the fourth and fifth lumbar vertebrae and the fifth lumbar vertebra and sacrum as well as the sacroiliac joint. The right facet joints of the two vertebrae were also invaded. After a thorough search of the literature, we find that the sacroiliac joint is the most common joint to be invaded by tumors. This is followed by the vertebral disc spaces and, last, the facet joints. Apart from these joints, we were unable to find any radiographic documentation of other joints being transarticularly invaded by tumors. We noted that there is a direct relation between transarticular tumor spread and joints that lack mobility and that certain tumors, benign and malignant, tend to invade these joints.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02341666
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 12
    Electronic Resource
    Electronic Resource
    Pulmonary Aspergillus chest wall involvement in chronic granulomatous disease: CT and MRI findings (1991)
    Springer
    Skeletal radiology 20 (1991), S. 487-493 
    Details
    ISSN: 1432-2161
    Keywords: Chronic granulomatous disease ; Chest wall invasion ; Pulmonary Aspergillus infection ; Computed tomography ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Pulmonary Aspergillus infection in patients with chronic granulomatous disease tends to involve the chest wall and consequently carries a high mortality rate. We report the findings of computed tomography (CT) and magnetic resonance imaging (MRI) in three such cases. One patient underwent both CT and MRI, one, CT only, and one, MRI only. In all three, both CT and MRI demonstrated pulmonary consolidations with direct extension to the adjacent chest wall. In both patients who were examined by CT, scans revealed permeative osteolytic changes of adjacent rib or spine compatible with osteomyelitis. In both patients who were examined by MRI, adjacent chest wall involvement was depicted on T1-weighted images and showed increased signal intensity on T2-weighted images. In one of these patients, the chest wall lesion was well defined on T2-weighted images, an appearance compatible with abscess. Epidural extension was demonstrated on MRI in the other patient, who later developed paraparesis. We suggest that CT and MRI have a complementary role in evaluating chest wall invasion by pulmonary Aspergillus infection in chronic granulomatous disease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00194242
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 13
    Electronic Resource
    Electronic Resource
    Magnetic resonance imaging features of fractures using the short tau inversion recovery (STIR) sequence: correlation with radiographic findings (1991)
    Springer
    Skeletal radiology 20 (1991), S. 499-507 
    Details
    ISSN: 1432-2161
    Keywords: Magnetic resonance imaging ; Fracture ; Short tau inversion recovery (STIR)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The MRI characteristics of fractures have been described on the basis of spin echo (SE) images emphasizing T1 and T2 contrast. These previous studies were carried out for injuries in which radiographic proof was often lacking. In comparison with SE images, short tau inversion recovery (STIR) images have been shown to provide superior contrast between normal and abnormal marrow. To determine the MRI characteristics of fracture using STIR pulse sequences, we reviewed 28 patients who had radiographic evidence of fracture and were examined with T1-weighted SE and STIR sequences. MRI marrow signal abnormalities were demonstrated at all fracture sites ranging in age from less than 24 h to 8 weeks. The extent of marrow signal abnormalities exceeded the size of corresponding radiographic findings of fracture in all cases. The MRI features of fractures on T1-weighted SE images consisted of irregular intramedullary zones of hypointensity. On STIR images a corresponding zone of hyperintensity extended to the outer cortical margin. Intramedullary lines of hypointensity extending to the inner cortical margin were identified within the hyperintense marrow abnormality on STIR images in 64% of the fractures. The results of this study show that MRI using T1-weighted SE and STIR sequences can consistently demonstrate prominent signal abnormalities at fracture sites including those in which radiographic signs are subtle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00194246
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 14
    Electronic Resource
    Electronic Resource
    Stability of osteochondral fragments of the femoral condyle: magnetic resonance imaging with histopathologic correlation in an animal model (1991)
    Springer
    Skeletal radiology 20 (1991), S. 601-606 
    Details
    ISSN: 1432-2161
    Keywords: Magnetic resonance imaging ; Osteochondral fracture ; Gadopentetate dimeglumine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The stability of surgically induced osteochondral fragments of the femoral condyle was examined by magnetic resonance imaging (MRI) using T1- and T2-weighted spin echo sequences in 7 dogs; contrast-enhanced T1-weighted spin-echo sequences were also obtained. Animals were sacrificed between the 34th and 196th day after surgery. MR images were compared with the histopathologic findings. Two loose and five stable fragments were found after injection of contrast medium. With the loose fragments, a well-defined line of high signal intensity between the fragment and the epiphysis showed marked enhancement. Histological examination revealed vascularized granulation tissue at the interface. Stable fragments also showed a similar, but irregularly defined line on plain sequences, but no enhancement after injection of contrast medium; histological examination showed no granulation tissue at the interface but intact bone trabeculae within the completely repaired fracture. Fibrocartilaginous repair at the articular cartilage surface also showed enhancement. Contrast-enhanced MR imaging allowed an exact delineation of the line of separation of unstable osteochondral fragments in this animal model with differentiation from a similar line occurring in stable fragments. However, this interface line in relation to stable fragments could not be explained histologically and probably reflects differences of binding or distribution of protons in healing osteochondral fragments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01106094
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 15
    Electronic Resource
    Electronic Resource
    MRI for evaluation of scrotal pathology (1991)
    Springer
    Urological research 19 (1991), S. 289-292 
    Details
    ISSN: 1434-0879
    Keywords: Magnetic resonance imaging ; Testicular cancer ; Benign scrotal disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Since 1986, 205 patients, age 2–84 years, mean age 33 years, with scrotal pathology were examined by magnetic resonance imaging (MRI). A 1.5-T Siemens Magnetom and specially designed external coils were used for obtaining T1- and T2-weighted images. Of these, 88 patients underwent MRI studies for suspicion of testicular cancer, and 117 for a variety of benign scrotal lesions. MRI studies yielded excellent diagnostic information of scrotal pathology: predictive value for diagnosing testicular cancer was 100% with 62% of correct differentiation between seminoma and non-seminomatous tumors. In future, the incidence of diagnostic surgical explorations of scrotal pathology can be reduced by MRI studies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00299060
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 16
    Electronic Resource
    Electronic Resource
    Planum temporale asymmetry: In-vivo morphometry affords a new perspective for neuro-behavioral research (1991)
    Springer
    Reading and writing 3 (1991), S. 331-343 
    Details
    ISSN: 1573-0905
    Keywords: Dyslexia ; Reading ; Handedness ; Laterality ; Temporal lobe ; Planum temporale ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Education
    Notes: Abstract High-resolution magnetic resonance (MR) imaging today allows the in vivo quantification of the surface area of the cortex covering the planum temporale and permits assessment of the direction and degree of individual left-right asymmetry of this structure. This methodologic advance is promoting new studies on the biological mechanisms of anatomic and functional lateralization and on the structural accompaniments of disorders such as developmental dyslexia. It is important to stress that studies must agree on the definition and measurement of planum asymmetry, and we review our definition and its justification in the present article. Data obtained from normal subjects supported the assumption that planum (a)symmetry underlies functional lateralization. Thus, familial sinistrality predicted for symmetry of the planum in all eight left-handers studied. The pattern of planum symmetry in the normals was similar to that found in the post mortem studies of dyslexic individuals. Insofar as hand preference and developmental dyslexia are in part genetically transmitted, we suggest that planum symmetry may represent an inherited condition as well. Further-more, even though planum symmetry is part of the anatomic substrate of developmental dyslexia, it is unlikely that it represents a form of developmental anatomic pathology.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00354966
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 17
    Electronic Resource
    Electronic Resource
    MRI diagnosis of delayed presentation of traumatic diaphragmatic hernia (1991)
    Springer
    Abdominal imaging 16 (1991), S. 298-300 
    Details
    ISSN: 1432-0509
    Keywords: Magnetic resonance imaging ; Diaphragmatic rupture ; Diaphragmatic hernia, radiography ; Traumatic diaphragmatic hernia, delayed
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Traumatic rupture of the diaphragm may go unrecognized in patients with multiple injuries to the abdomen and chest. The majority of undiagnosed diaphragmatic ruptures will eventually become symptomatic and are associated with a high mortality rate if not treated immediately. Multiplanar imaging with magnetic resonance (MR) provided a definitive diagnosis of delayed presentation of traumatic diaphragmatic hernia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01887372
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 18
    Electronic Resource
    Electronic Resource
    Pancreatic cavernous hemangioma: CT, MRI, US, and angiography characteristics (1991)
    Springer
    Abdominal imaging 16 (1991), S. 307-310 
    Details
    ISSN: 1432-0509
    Keywords: Pancreas, hemangioma ; Ultrasonography ; Computed tomography ; Magnetic resonance imaging ; Angiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A large pancreatic cavernous hemangioma was found in a 30-year-old man with abdominal distention. Plain and contrast-enhanced computed tomography (CT), magnetic resonance imaging (MRI), ultrasonography (US), and angiography were performed prior to operation. Contrast-enhanced CT and angiography showed a large poorly enhanced hypovascular tumor at the head of the pancreas. But MRI and US disclosed findings compatible with a cavernous hemangioma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01887375
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 19
    Electronic Resource
    Electronic Resource
    Leiomyosarcoma of the duodenum (1991)
    Springer
    Abdominal imaging 16 (1991), S. 109-112 
    Details
    ISSN: 1432-0509
    Keywords: Duodenum, leiomyosarcoma ; Computed tomography ; Magnetic resonance imaging ; Ultrasonography ; Angiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Leiomyosarcoma of the duodenum is a rare disease and its characteristics have been described previously in the literature. We present a case of duodenal leiomyosarcoma, which was diagnosed by several imaging techniques prior to operation. Findings of computed tomography (CT), magnetic resonance imaging (MRI), ultrasonography, and angiography in this case are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01887321
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 20
    Electronic Resource
    Electronic Resource
    MR findings in liver adenomatosis (1991)
    Springer
    Abdominal imaging 16 (1991), S. 234-236 
    Details
    ISSN: 1432-0509
    Keywords: Liver, neoplasms ; Adenomatosis ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Liver adenomatosis is a rare entity in which multiple hepatic adenomas (more than 10) occur in patients with no prior history of oral contraceptives or androgenic steroid use. This report describes findings of this entity on magnetic resonance imaging (MRI) and discusses the differential diagnosis of this disease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01887353
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 21
    Electronic Resource
    Electronic Resource
    MRI and paediatric neuroradiology: a present perspective (1991)
    Springer
    European radiology 1 (1991), S. 3-18 
    Details
    ISSN: 1432-1084
    Keywords: Magnetic resonance imaging ; Children ; Neuroradiology ; Brain ; Spinal cord
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00540097
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 22
    Electronic Resource
    Electronic Resource
    Ten years of clinical magnetic resonance: today's state-of-the-art system (1991)
    Springer
    European radiology 1 (1991), S. 95-107 
    Details
    ISSN: 1432-1084
    Keywords: Nuclear magnetic resonance ; Magnetic resonance imaging ; Diagnostic imaging ; Trends
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00451289
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 23
    Electronic Resource
    Electronic Resource
    MRI of the pathological female pelvis (1991)
    Springer
    European radiology 1 (1991), S. 75-80 
    Details
    ISSN: 1432-1084
    Keywords: Magnetic resonance imaging ; Pelvis ; neoplasms
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The current status of the use of MRI in the diagnosis and staging of pelvic masses is reviewed, emphasizing the positive and negative aspects of this imaging technique.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00540111
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 24
    Electronic Resource
    Electronic Resource
    Spinal cord compression in thalassemia major: value of MR imaging (1991)
    Springer
    European radiology 1 (1991), S. 81-84 
    Details
    ISSN: 1432-1084
    Keywords: Extramedullary Hematopoiesis ; Thalassemia ; Spine ; Liver ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A 17 year old Iranian girl presented with thalassemia major, complicated by acute compression of the cauda equina caused by extramedullary haemopoiesis. The advantages of MRI in confirming the spinal space-occupying lesion and involvement of liver and pancreas are discussed in the context of treatment decision analysis and follow-up.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00540112
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 25
    Electronic Resource
    Electronic Resource
    MRI of cerebral ischaemia in rats with occlusion of the middle cerebral artery (1991)
    Springer
    European radiology 1 (1991), S. 118-123 
    Details
    ISSN: 1432-1084
    Keywords: Magnetic resonance imaging ; Middle cerebral occlusion ; Brain oedema ; Cerebral infarct ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The development of ischaemic brain oedema caused by middle cerebral artery (MCA) occlusion was studied by serial magnetic resonance imaging (MRI) in rats. Multiple spin echo sequences were used with TR = 1500 ms and TE = 30–240 ms (8 echos). Subtraction images were obtained by subtracting the last three echos from the first echo. Fourteen rats were studied 3, 6, and 12 h and 1, 1.5, 3, 4, 6, and 8 days after MCA occlusion, and 2 of them also 3 and 6 weeks later. Two T2 components could be separated, a fast one representing bound water and a slow one representing free bulk water. MR showed T2 prolongation even on the first examination, and the highest values were observed 24h after occlusion. The subsequent examinations showed a slow reduction in oedema. MR studies 3 and 6 weeks after occlusion revealed an area of very long T2, which correlated well with infarction shown by histology. The subtraction images demonstrated both the infarct location and the oedematous changes in the surrounding uninfarcted tissue. MRI imaging employing T2 components and subtraction images appears to be a valuable method for observing the time course of the development and resolution of oedema in cerebral infarction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00451293
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 26
    Electronic Resource
    Electronic Resource
    MR imaging of adrenoleukodystrophy (1991)
    Springer
    Neuroradiology 33 (1991), S. 25-29 
    Details
    ISSN: 1432-1920
    Keywords: Adrenoleukodystrophy ; Adrenomyeloneuropathy ; Magnetic resonance imaging ; Demyelination
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We performed MRI in 7 cases with adrenoleukodystrophy (ALD), including 3 cases with childhood ALD, 3 cases with adrenomyeloneuropathy (AMN) and one symptomatic heterozygote. The symptomatic heterozygote was the mother of the patient with AMN. High-field-strength (2.0T) MRI was used in two cases with childhood ALD. In all 3 cases of childhood ALD, MR showed widespread lesions in both cerebral hemispheres. Areas of low intensity in the diencephalon or striatum on heavily T2-weighted images at 2.0T were seen in 2 cases with childhood ALD. Cerebral lesions confined to the internal capsule, cerebral peduncle and optic radiation in the adult onset ALD including AMN and symptomatic heterozygote, have not been reported and this confinement may indicate an early stage of the disease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00593329
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 27
    Electronic Resource
    Electronic Resource
    Magnetic resonance imaging of cerebral fat embolism (1991)
    Springer
    Neuroradiology 33 (1991), S. 72-74 
    Details
    ISSN: 1432-1920
    Keywords: Magnetic resonance imaging ; Cerebral fat embolism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The cerebral fat embolism is a potentially serious complication of fractures but clinical cases often go undiagnosed. Two cases of clinically diagnosed cerebral fat embolism are reported, and MR images of these patients are described. While brain CT revealed no abnormality, MR imaging showed relative low-intensity areas on T1-weighted images and high-intensity areas on T2-weighted images. In one patient follow-up MR showed nearly complete resolution of the abnormal signal. MR imaging appears to be valuable for detecting the lesions in these patients.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00593341
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 28
    Electronic Resource
    Electronic Resource
    Magnetic resonance imaging contribution to the diagnosis of spinal cord compression by a subdural arachnoid cyst (1991)
    Springer
    Neuroradiology 33 (1991), S. 87-89 
    Details
    ISSN: 1432-1920
    Keywords: Subdural arachnoid cyst ; Thoracic spine ; Magnetic resonance imaging ; Myelography computed tomography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A case of subdural arachnoid cyst of the thoracic spine was studied by magnetic resonance imaging (MRI), myelography and CT myelography. Myelography and especially CT myelography suggested the diagnosis; MRI established it, showing the communication between the cyst and the subarachnoid space. Final characterization was based on surgical findings and pathological examination.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00593347
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 29
    Electronic Resource
    Electronic Resource
    Magnetic resonance imaging of cavernous sinus cavernous hemangiomas (1991)
    Springer
    Neuroradiology 33 (1991), S. 118-122 
    Details
    ISSN: 1432-1920
    Keywords: Brain neoplasms ; Cavernous hemangioma ; Cavernous sinus ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Radiological findings of surgically verified cavernous hemangiomas of the cavernous sinus are presented with special reference to the appearance in magnetic resonance imaging. Differences in radiological features of the cavernous sinus cavernous hemangiomas and intracerebral cavernous hemangiomas are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00588248
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 30
    Electronic Resource
    Electronic Resource
    Neuroradiology of central neurocytoma (1991)
    Springer
    Neuroradiology 33 (1991), S. 143-148 
    Details
    ISSN: 1432-1920
    Keywords: Central neurocytoma ; Intraventricular tumor ; Computed tomography ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Central neurocytomas (CN) are rare, usually benign cerebral intraventricular neuroepithelial tumors, which occur in adult patients. Retrospective evaluation of the CT- and MRI-findings in eight cases as well as review of the cases reported in the literature showed that CN usually presents as a primarily slightly hyperdense and/or hyperintense mass within the body of the lateral ventricle with moderate contrast enhancement. The majority of tumors contain both multiple small cysts and calcifications and exhibit a characteristic broad based attachment to the superolateral ventricular wall. We conclude that these criteria appear to be reliable to exclude other intraventricular tumors such as astrocytoma, giant cell astrocytoma, ependymoma, subependymoma, intraventricular oligodendroglioma and meningioma. Preoperative diagnosis of CN may prove of value for planning therapy, because this tumor type seems to have a better prognosis than other intraventricular tumors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00588253
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 31
    Electronic Resource
    Electronic Resource
    Dural sinus thrombosis (1991)
    Springer
    Neuroradiology 33 (1991), S. 165-167 
    Details
    ISSN: 1432-1920
    Keywords: Dural sinus thrombosis ; Magnetic resonance imaging ; Angiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Magnetic resonance imaging has been reported to have advantages over conventional angiography in the diagnosis of dural sinus thrombosis. A case report is presented describing the application of MR techniques including MR angiography, to diagnose and monitor therapy for dural sinus thrombosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00588259
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 32
    Electronic Resource
    Electronic Resource
    Primary leiomyosarcoma of the spinal dura mater (1991)
    Springer
    Neuroradiology 33 (1991), S. 173-174 
    Details
    ISSN: 1432-1920
    Keywords: Leiomyosarcoma ; Dura mater ; Spinal tumor ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The case of a 64-year-old woman with a leiomyosarcoma arising from the upper thoracic spinal dura mater is presented: the CT and magnetic resonance image features are reported.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00588262
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 33
    Electronic Resource
    Electronic Resource
    MR of progressive neurodegenerative change in treated Menkes' kinky hair disease (1991)
    Springer
    Neuroradiology 33 (1991), S. 181-182 
    Details
    ISSN: 1432-1920
    Keywords: Brain abnormalities ; Menkes' kinky hair disease ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary MR examinations of a male child with Menkes' kinky hair disease, a genetic disorder of copper metabolism, at four months and 30 months, document the progression of neurodegenerative changes despite parenteral copper therapy. These changes include severe cortical and cerebellar atrophy, deranged cerebral vasculature, and subdural fluid collection.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00588265
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 34
    Electronic Resource
    Electronic Resource
    MRI of two infants with tuberous sclerosis (1991)
    Springer
    Neuroradiology 33 (1991), S. 175-177 
    Details
    ISSN: 1432-1920
    Keywords: Tuberous sclerosis ; Hamartomas ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Two children (41/2 and 9 months of age) suffering from tuberous sclerosis were examined with MRI, using a 2.35-Tesla magnet. Both patients showed the typical brain lesions of tuberous sclerosis, namely, subependymal nodules projecting into the lateral ventricles and parenchymal hamartomas. However, in one child the examination revealed subcortical foci of low signal intensity on T2-weighted images and of high signal intensity on T1-weighted images, which could represent fat-containing hamartomas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00588263
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 35
    Electronic Resource
    Electronic Resource
    Intracranial arachnoid cysts in myotonic dystrophy (1991)
    Springer
    Neuroradiology 33 (1991), S. 258-259 
    Details
    ISSN: 1432-1920
    Keywords: Myotonic dystrophy ; Arachnoid cyst ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Clinically apparent brain dysfunction is common in myotonic dystrophy. In a sample of fourteen adult patients with the definite form of this disease, brain magnetic resonance imaging detected frequent white matter abnormalities and ventriculomegaly. In addition, two patients exhibited an intracranial arachnoid cyst, a condition of neurosurgical interest that could be related to the generalized dysmaturational process present in this disease. Patients with myotonic dystrophy deserve a careful screening for brain involvement. Further MRI studies should ascertain the actual prevalence of brain anomalies in myotonic dystrophy and define the role of this procedure in the workup of this disease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00588231
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 36
    Electronic Resource
    Electronic Resource
    Magnetic resonance imaging in familial central diabetes insipidus (1991)
    Springer
    Neuroradiology 33 (1991), S. 272-273 
    Details
    ISSN: 1432-1920
    Keywords: Familial central diabetes insipidus ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary More detailed examinations of the pituitary gland in central diabetes insipidus (CDI) has been possible with magnetic resonance imaging (MRI). Compared to the high signal findings in the posterior lobes of normal subjects, the absence of such signal in adults and children with primary CDI has been reported. Familial CDI is a hereditary form of primary CDI with a variety of clinical expressions among affected individuals which is said to be related to varying degrees of an arginine vasopressin (AVP) deficiency. However, the structural correlates have yet to be documented by MRI technique. This report describes the pituitary gland MRI findings (using a superconducting magnet; 3 mm-slice thickness; spinecho, repetition time 400 ms, echo time 25 ms) in five patients in one family with familial CDI. A signal of high intensity was detected in the posterior part of the pituitary gland in 2 patients but not in 3 others. We concluded that MRI of the posterior pituitary lobe in familial CDI seem to vary in members of the same family.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00588235
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 37
    Electronic Resource
    Electronic Resource
    MRI and pathological findings in two cases of askin tumors (1991)
    Springer
    Neuroradiology 33 (1991), S. 277-281 
    Details
    ISSN: 1432-1920
    Keywords: Infants ; Children ; Magnetic resonance imaging ; Primitive peripheral neuroectodermal tumors
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Askin tumors are primitive peripheral neuroectodermal tumors (PPNET) located in the thoracopulmonary region. This entity was first proposed in 1979 by Askin et al. These highly malignant tumors occur primarily in children and young adults. Pre- und postoperative MRI findings are presented for two pathologically proven cases. MRI is the most appropriate imaging modality for the diagnosis and eventual follow-up for these tumors. They appear homogenous, and iso- or discretely hypointense in comparison to the spinal cord on T1-weighted images and hyperintense on proton density and T2-weighted images. They show a very stark contrast enhancement after i. v. injection of paramagnetic contrast agents. Sharp tissue borders, and exact tumor extension were shown in both cases. The high signal intensity on T2-weighted images was not altered by chemotherapy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00588237
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 38
    Electronic Resource
    Electronic Resource
    Low back pain due to extramedullary hemopoiesis (1991)
    Springer
    Neuroradiology 33 (1991), S. 284-285 
    Details
    ISSN: 1432-1920
    Keywords: Blood abnormalities ; Hematopoiesis extramedullary ; Spine ; Computed tomography ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Two cases of extramedullary hemopoiesis in the lower spinal column are reported. One of them was due to thalassemia major and the other to thalassemia intermedia. CT and MRI studies showed paraspinal and presacral masses respectively which caused nerve root compression. It is concluded that the differential diagnosis of low back pain and radicular or pseudoradicular pain should include extramedullary hemopoiesis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00588239
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 39
    Electronic Resource
    Electronic Resource
    Increased rCBF in gray matter heterotopias detected by SPECT using99mTc hexamethyl-propylenamine oxime (1991)
    Springer
    Neuroradiology 33 (1991), S. 310-312 
    Details
    ISSN: 1432-1920
    Keywords: Single photon emission computed tomography ; Magnetic resonance imaging ; Brain abnormalities ; Congenital malformations ; Gray matter heterotopia ; Epilepsy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Imaging findings of morphology and regional cerebral blood flow in two patients suffering from epileptic seizures are presented. CT and MRI revealed heterotopic gray matter as a probable structural correlate, causing the seizure disorder.99mTc hexamethyl-propylenamine oxime (HM-PAO) SPECT demonstrated focally increased regional cerebral blood flow in both patients in the areas of their heterotopic lesions. Heterotopic and orthotopic gray matter seem to have similar features in terms of regional perfusion. A focally increased brain perfusion in interictal epileptic patients may indicate an underlying migration anomaly.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00587812
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 40
    Electronic Resource
    Electronic Resource
    Thickened fatty filum terminale: MR imaging (1991)
    Springer
    Neuroradiology 33 (1991), S. 331-333 
    Details
    ISSN: 1432-1920
    Keywords: Filum terminale ; Fat tissue ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary MR images of four patients with a thickened filum terminale showing a fat signal are presented. There were no related symptoms and no evidence of tethering. The thickened fatty filum terminale seemed to be a developmental anomaly and without clinical significance. As the incidence of this anomaly was 0.24% in our series, knowledge of its possible presence of this anomaly is important for routine reviews of MR image.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00587817
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 41
    Electronic Resource
    Electronic Resource
    “Unusual” MRI appearance of sphenoid sinus mucocele (1991)
    Springer
    Neuroradiology 33 (1991), S. 352-353 
    Details
    ISSN: 1432-1920
    Keywords: Magnetic resonance imaging ; Mucocele ; Sphenoid sinus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The authors report a case of sphenoid sinus mucocele which exhibited unusual MRI features. However a review of the literature shows that these lesions may present with different MRI appearances probably related to the variability of the cyst content. Further series are needed for a better definition of the MRI behaviour of the lesions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00587823
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 42
    Electronic Resource
    Electronic Resource
    Cerebral ganglioglioma and neurofibromatosis type I (1991)
    Springer
    Neuroradiology 33 (1991), S. 357-359 
    Details
    ISSN: 1432-1920
    Keywords: Ganglioglioma ; Neurofibromatosis ; Computed tomography ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We report the occurrence of a left frontal lobe ganglioglioma in a patient with neurofibromatosis type I (von Recklinghausen's disease) and conclude that the occurrence of a cerebral ganglioglioma in a patient with neurofibromatosis must probably be considered coincidental.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00587825
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 43
    Electronic Resource
    Electronic Resource
    Meningioma of the third ventricle (1991)
    Springer
    Neuroradiology 33 (1991), S. 354-356 
    Details
    ISSN: 1432-1920
    Keywords: Meningioma ; Third ventricle ; Magnetic resonance imaging ; Computed tomography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Meningiomas of the third ventricle are rare intracranial neoplasms. We reported such a case in a 42 years old man without clinical evidence of increased intracranial pressure. Computed tomography (CT) and magnetic resonance imaging (MRI) demonstrated the tumour sitting in the superior and anterior part of the third ventricle, bulging into the lateral ventricles. CT was more effective than MRI in the demonstration of calcifications whereas MRI proved to be superior in delineation of the tumour and its relation with surrounding structures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00587824
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 44
    Electronic Resource
    Electronic Resource
    CT and MR imaging of acute cerebellar ataxia (1991)
    Springer
    Neuroradiology 33 (1991), S. 360-361 
    Details
    ISSN: 1432-1920
    Keywords: Acute cerebellar ataxia ; X-ray computed tomography ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary An adult female showed mild cerebellar ataxia and CSF pleocytosis following an acute infection of the upper respiratory tract, and was diagnosed as having acute cerebellar ataxia (ACA). CT and MR appearances in the acute stage revealed moderate swelling of the cerebellum and bilaterally increased signal intensity in the cerebellar cortex.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00587826
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 45
    Electronic Resource
    Electronic Resource
    High signal intensity of both putamina in patients with HIV infection (1991)
    Springer
    Neuroradiology 33 (1991), S. 362-363 
    Details
    ISSN: 1432-1920
    Keywords: Human immunodeficiency virus (HIV) ; Encephalitis ; Magnetic resonance imaging ; AIDS
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We report two patients with HIV infection whose MR imaging showed abnormal high signal intensity confined to both putamina on T2-weighted spin echo (SE) images. We assume that they may represent the early manifestations of HIV encephalitis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00587827
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 46
    Electronic Resource
    Electronic Resource
    Serial MR imaging in Creutzfeldt-Jakob disease (1991)
    Springer
    Neuroradiology 33 (1991), S. 364-367 
    Details
    ISSN: 1432-1920
    Keywords: Creutzfeldt-Jakob disease ; Brain atrophy ; White matter degeneration ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Serial magnetic resonance (MR) imagings of two autopsied patients with Creutzfeldt-Jakob disease (CJD) are presented. Both patients showed a dramatic progression of brain atrophy. The initial MR imagings were, however, interpreted as normal except for localized mild cortical atrophy in one patient. When a normal MR image is obtained in a demented middle-aged or aged patient, CJD may still need to be ruled out: follow up MR imaging may be useful.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00587828
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 47
    Electronic Resource
    Electronic Resource
    Magnetic resonance imaging in toxic encephalopathy due to podophyllin poisoning (1991)
    Springer
    Neuroradiology 33 (1991), S. 372-373 
    Details
    ISSN: 1432-1920
    Keywords: Podophyllin poisoning ; Encephalopathy ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A case of toxic encephalopathy due to podophyllin poisoning was presented. It is documented for the first time by MRI that diffuse cerebral atrophy occurred as a result of podophyllin toxicity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00587830
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 48
    Electronic Resource
    Electronic Resource
    MR findings in leukodystrophy (1991)
    Springer
    Neuroradiology 33 (1991), S. 368-371 
    Details
    ISSN: 1432-1920
    Keywords: Leukodystrophy ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Up to 5 years ago, the radiological diagnosis of leukodystrophy was based on computed tomography (CT). More recently, magnetic resonance imaging (MRI) has been used to study pathology of the white matter with great success. The abnormalities in eight patients with different types of leukodystrophy are described, using high-field MRI. CT and MRI show comparable sensitivity in detecting the pathological changes of leukodystrophy. MRI seems to be superior in visualizing the extent of the lesions, their precise anatomical location and any involvement of the brain stem and cerebellum. Differential diagnosis among the three types of leukodystrophy by MRI is difficult but may be attempted by some features. Specific diagnosis can be achieved only by laboratory examination or histology. The role of MRI should be to suggest the proper biochemical test at an earlier stage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00587829
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 49
    Electronic Resource
    Electronic Resource
    MR imaging of the brainstem: normal postnatal development (1991)
    Springer
    Neuroradiology 33 (1991), S. 391-395 
    Details
    ISSN: 1432-1920
    Keywords: Magnetic resonance imaging ; Normal brain development ; Midbrain ; Mesencephalon ; Myelination
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Magnetic resonance imaging (MRI) of the mesencephalon during the first four years of life allowed normal maturational processes of the various midbrain structuresin vivo to be followed. Using T2-weighted SE sequences, we found 5 characteristic age dependent patterns on axial tomograms taken at the level of the superior colliculi, that let us derive a grading system for normal development of the quadrigeminal plate, the cerebral peduncles, the reticular substantia nigra and the red nuclei. A subsequent statistical analysis of these age dependent changing patterns on T2-weighted MRI of 60 neonates, infants and small children yielded normal age ranges for each of the 5 maturational stages of the midbrain. Grading the changing pattern of midbrain structures during early postnatal life into 5 distinct maturational stages allowed not only monitoring of normal differentiation, e.g. myelination of the brainstemin vivo, but may also help to distinguish between normal, delayed and abnormal development of the mesencephalon on routine MRI.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00598609
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 50
    Electronic Resource
    Electronic Resource
    Lateral sacral artery supply to an intramedullary arteriovenous fistula at the conus medullaris (1991)
    Springer
    Neuroradiology 33 (1991), S. 419-421 
    Details
    ISSN: 1432-1920
    Keywords: Spinal arteriovenous malformation ; Magnetic resonance imaging ; Lateral sacral artery
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In this 25-year-old woman, severe low back pain, flaccid paraparesis, sensory disturbance of both legs and sphincter dysfunction resulted from an intramedullary conal arteriovenous malformation fed by an anterior spinal artery arising from the left sixth intercostal artery and by the left lateral sacral artery, a branch of the left internal iliac artery.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00598616
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 51
    Electronic Resource
    Electronic Resource
    Hajdu-Cheney Syndrome: MR imaging (1991)
    Springer
    Neuroradiology 33 (1991), S. 441-442 
    Details
    ISSN: 1432-1920
    Keywords: Hajdu-Cheney syndrome ; Acro-osteolysis ; Magnetic resonance imaging ; Osteodysplasia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Hajdu-Cheney syndrome is a rare congenital disease with acro-osteolysis, osteoporotic changes of the spine and long bones of extremities and marked basilar invagination with an unusually deformed skull. Magnetic resonance imaging of a 32-year-old male revealed the deformed skull and almost horizontal basal angle and the elongated and upwardly shifted brain stem caused by the tip of the odontoid process of the second cervical vertebra invaginating the base of the skull. In addition there were atrophic pituitary gland, widely open sella turcica and symmetrical fluid collections along the optic nerve sheath.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00598621
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 52
    Electronic Resource
    Electronic Resource
    Massive ischemic cerebellar infarction due to cocaine use (1991)
    Springer
    Neuroradiology 33 (1991), S. 449-450 
    Details
    ISSN: 1432-1920
    Keywords: Drug abuse ; Brain ; Infarction ; Computed tomography ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary This young female suffered massive unilateral infarction of the cerebellum due to cocaine use. While cocaine-associated small, asymptomatic cerebellar infarcts have been reported in the literature, massive, symptomatic cerebellar infarction attending the use of cocaine has not been previously reported.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00598624
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 53
    Electronic Resource
    Electronic Resource
    Bony exostosis of the atlas with resultant cranial nerve palsy (1991)
    Springer
    Neuroradiology 33 (1991), S. 453-454 
    Details
    ISSN: 1432-1920
    Keywords: Osteochondroma ; Spinal tumour ; Cranial nerve palsy ; Computed tomography ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A case of tenth and twelfth nerve compression secondary to a bony exostosis of the first cervical vertebra is described. This uncommon phenomenon serves to outline the importance of imaging the course of a cranial nerve when no intracranial abnormality is demonstrable on CT or MRI. The radiologic features of spinal osteochondromas are reviewed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00598626
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 54
    Electronic Resource
    Electronic Resource
    Pattern recognition in magnetic resonance imaging of white matter disorders inchildren and young adults (1991)
    Springer
    Neuroradiology 33 (1991), S. 478-493 
    Details
    ISSN: 1432-1920
    Keywords: Expert system ; Pattern recognition ; White matter disorders ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Magnetic resonance imaging (MRI) is considered to be a highly sensitive modality for visualizing white matter abnormalities. Estimations of its specificity are far less positive. However, diagnostic specificity depends upon both the inherent qualities of MRI and on the quality of image interpretation. Systematic and detailed analysis of many image elements, and substantial prior experience improve the quality of image interpretation and thus improve diagnostic specificity. The present study has been set up to develop a pattern recognition system which combines sensitivity and specificity, systematic analysis of image elements and prior experience. This pattern recognition is based on the data of 277 patients with white matter disorders referred for MRI. The information was stored in a data base and computer analyzed. Twenty-two MRI patterns were discerned in as many disease categories. The frequency of occurrence of each MRI abnormality was assessed per disease category to establish the pattern of abnormalities characteristic for each separate disease category. The pattern recognition program was also written so that: (a) when fed data about MRI abnormalities observed in a new case, the computer produces a differential diagnosis with probabilities and 95% confidence intervals for each differential diagnosis; (b) specific data on the MRI findings of new cases could be added to the data base to improve the experience and accuracy of the program. This program for pattern recognition of abnormalities in the MR images of white matter disorders enhances the specificity of image interpretation and provides a wonderful aid for teaching purposes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00588038
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 55
    Electronic Resource
    Electronic Resource
    Magnetic resonance imaging of limbic encephalitis (1991)
    Springer
    Neuroradiology 33 (1991), S. 520-523 
    Details
    ISSN: 1432-1920
    Keywords: Magnetic resonance imaging ; Encephalitis ; Limbic system
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In two patients with limbic encephalitis serial magnetic resonance (MR) imaging showed evolution of abnormal high-signal intensity in both hippocampal formations on T2-weighted images.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00588045
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 56
    Electronic Resource
    Electronic Resource
    Reversible MRI and CT findings in uremic encephalopathy (1991)
    Springer
    Neuroradiology 33 (1991), S. 524-526 
    Details
    ISSN: 1432-1920
    Keywords: Magnetic resonance imaging ; Computed tomography ; Uremic encephalopathy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In this 35-year-old woman with chronic glomerulonephritis and uremic encephalopathy, the basal ganglia bilaterally, internal capsules and periventricular white matter showed hypodensity on CT, low signal intensity on T1-weighted MRI and high signal intensity on T2-weighted MRI. Following a series of dialyses, her clinical symptoms and blood chemistry improved. The CT and MRI returned to normal. These reversible abnormalities may be caused by reversible ischemic change, but disorders of cerebral metabolism and uremic toxins may contribute.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00588046
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 57
    Electronic Resource
    Electronic Resource
    MRI in the diagnosis of heterotopic gray matter (1991)
    Springer
    Neuroradiology 33 (1991), S. 527-528 
    Details
    ISSN: 1432-1920
    Keywords: Brain abnormality ; Congenital-heterotopic gray matter ; Magnetic resonance imaging ; Neuronal migration anomalies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary This report illustrates the MR appearance of three cases of heterotopic gray matter first discovered in adulthood.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00588047
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 58
    Electronic Resource
    Electronic Resource
    Noninvasive assessment of coarctation of the aorta: Comparative measurements by two-dimensional echocardiography, magnetic resonance, and angiography (1991)
    Springer
    Pediatric cardiology 12 (1991), S. 1-5 
    Details
    ISSN: 1432-1971
    Keywords: Magnetic resonance imaging ; Coarctation of the aorta ; Echocardiography ; Children
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Fifteen patients, aged between 9 and 21 years (mean, 15.1), with native coarctation of the aorta (CoA) or suspected recoarctation after surgical repair, underwent three different diagnostic procedures. Two-dimensional echocardiography (2D echo) and magnetic resonance imaging (MRI) of the thoracic aorta were performed in all patients; 14 patients underwent aortography, and digital subtraction angiography of the aorta was performed in one (after injection via a central venous catheter). Conventional electrocardiographic (ECG) gated MRI was performed, using the sagittal plane, a 256×256 acquisition matrix, multi-slice technique and a slice thickness of 10 mm. Diameters at the coarctation site were determined by all methods. Additional diameters of the descending aorta and the aortic arch were measured by MRI and echocardiography, respectively. All noninvasively obtained diameters were compared with angiographic data. Ultrasound imaging of the aortic isthmus was achieved in seven of 15 patients and of the aortic arch in nine of 15. The mean difference compared with angiographically determined diameters was 1.7 (0–7) mm, being greater for the coarctation site [mean, 2.2 (0–4)]. MRI images of the aortic isthmus were obtained in all patients, but the difference to angiographically determined diameters was slightly higher [mean, 3.2 mm (0–8)] than the ultrasound results. This deviation was presumably due to technical conditions, such as slice thickness and orthogonal imaging planes. Including all diameters, the correlation to invasive measurements wasr=0.82 (SEM=3.1) for MRI andr=0.89 (SEM=2.3) for echo recordings. It is concluded that MRI gives a reliable estimate of the severity of coarctation in a higher percentage of investigated patients. However, in patients in whom ultrasound imaging is successful, results are as reliable as those obtained by MRI.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02238489
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 59
    Electronic Resource
    Electronic Resource
    Cystic diseases of the kidney in children: MRI, including RARE-MR-urography (1991)
    Springer
    European radiology 1 (1991), S. 27-32 
    Details
    ISSN: 1432-1084
    Keywords: Magnetic resonance imaging ; Rapid imaging ; Renal cysts ; Renal dysplasia ; Kidney
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In ten children with cystic diseases of the kidney RARE-MR-urography (rapid acquisition with relaxation enhancement) and T1-weighted magnetic resonance imaging were performed. RARE-MR-urography rapidly and selectively depicts fluid by heavy T2 weighting. Thus, the entire kidney with all its cysts and the urinary tract can be displayed in one non-tomographic image, or preferably in multiple tomographic slices, should there be many small cysts. T1-weighted sequences show the renal parenchyma, signal intensity changes, and/or loss of corticomedullary differentiation. As regards morphology, ultrasound (US) will suffice for diagnostic purposes in most cystic diseases of the kidney. However, in very small cystic lesions where US slows a “pepper and salt” pattern due to insufficient spatial resolution, RARE-MR-urography can display the small fluid-filled spaces causing this appearance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00540099
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 60
    Electronic Resource
    Electronic Resource
    Mixed solid and cystic acoustic neuroma: MR features and differential diagnosis (1991)
    Springer
    European radiology 1 (1991), S. 169-171 
    Details
    ISSN: 1432-1084
    Keywords: Acoustic nerve ; Neuroma ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We present a very rare case of combined cystic and solid acoustic neuroma investigated by magnetic resonance imaging (MRI). This case illustrates the value of MRI in the characterization of tumors in the posterior cranial fossa, particularly acoustic neuromas, and its diagnostic impact in unusual situations. The differential diagnosis of cystic and mixed lesions in the cerebellopontine angle is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00451303
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 61
    Electronic Resource
    Electronic Resource
    Neurological cause of late postpartum seizures (1991)
    Springer
    Archives of gynecology and obstetrics 248 (1991), S. 151-155 
    Details
    ISSN: 1432-0711
    Keywords: Eclampsia complications ; Subdural effusion ; Meningeal thickening ; focal seizures ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A 32-year-old primigravida showed signs of pre-eclampsia before delivery of a healthy boy at term. The CSF-space was accidentally punctured during epidural anaesthesia in labour. One day later hypertension was noted and the patient had a single generalized fit. For the next three weeks she had postural headaches, fluctuating hypertension, intermittent hearing loss and doublevision. On the 22nd day of postpartum, the patient had the first of a series of partial and later generalized seizures, followed by hemiparesis, alteration of consciousness, and finally slow recovery with corticosteroid therapy. Bilateral subdural effusions and generalized meningeal thickening were found on MR scans. Repeated MRI excluded sinus thrombosis and documented the response to treatment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02390093
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 62
    Electronic Resource
    Electronic Resource
    Disturbed myelination in patients with treated hyperphenylalaninaemia: evaluation with magnetic resonance imaging (1991)
    Springer
    European journal of pediatrics 150 (1991), S. 185-189 
    Details
    ISSN: 1432-1076
    Keywords: Phenylketonuria ; Adolescents ; Magnetic resonance imaging ; Myelination
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Cranial magnetic resonance imaging (MRI) was performed in nine treated adolescents with hyperphenylalaninaemia (HPA) in order to analyse possible changes in myelination. Three patients suffered from type I HPA, four from type II and two from type III (persistent HPA). Images were obtained with a 1.5T unit using spin-echo-sequences. In all patients with type I or type II HPA, abnormal findings in the cerebral white matter were demonstrated including band-like and/or confluent patchy areas of high signal intensity predominantly in the peritrigonal region, with anterior and posterior periventricular extension and/or involvement of the subcortical white matter. The extent of MRI changes did not correlate with the initiation, duration or quality of dietary treatment. There was also no consistent relationship between electrophysiological changes and white matter abnormalities on MRI. Our findings suggest a disturbance of myelination in patients with treated HPA. These results correspond well with earlier neuropathological and biochemical studies in untreated patients.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01963563
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 63
    Electronic Resource
    Electronic Resource
    Magnetic resonance imaging in a case of mumps postinfectious encephalitis with asymptomatic optic neuritis (1991)
    Springer
    European journal of pediatrics 150 (1991), S. 773-775 
    Details
    ISSN: 1432-1076
    Keywords: Magnetic resonance imaging ; Mumps ; Acute disseminated encephalomyelitis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A 5-year-old male patient with asymptomatic optic neuritis and mumps postinfectious encephalitis or acute disseminated encephalomyelitis is reported. Magnetic resonance imaging (MRI) with a short inversion time inversion recovery sequence was valuable in detecting clinically silent lesions of the unilateral right optic nerve in addition to visual evoked potentials. Evidence of concurrent optic neuritis was useful for detecting more extensive neurological involvement, leading to the diagnosis of mumps postinfectious encephalitis. A systmatic MRI study should be performed in children with mumps encephalitis, regardless of appreciable clinical deficits.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02026708
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 64
    Electronic Resource
    Electronic Resource
    Long-term nervous system damage from radiation of the spinal cord: An electrophysiological study (1991)
    Springer
    Journal of neurology 238 (1991), S. 9-15 
    Details
    ISSN: 1432-1459
    Keywords: Radiation damage ; Spinal cord ; Magnetic resonance imaging ; Somatosensory evoked potentials ; Motor evoked potentials
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A group of 13 patients suffering from Hodgkin's disease who had undergone chemotherapy and radiotherapy (above and below the diaphragm) approximately 10 years earlier was studied. The total chemotherapeutic dose was similar for all patients; the radiotherapy dose, however, was standard for 7 patients, while the other 6 received much higher dosages over limited regions of the spinal cord. Although most of these patients appeared normal both clinically and on magnetic resonance imaging, a neurophysiological study was performed to determine whether there was any involvement of the central or peripheral nervous system. Motor conduction velocity and sensory conduction velocity were measured in the lower limbs as well as spinal- and scalprecorded somatosensory evoked potentials (SEPs) in response to stimulation of the posterior tibial and sural nerves at the ankle. In addition, motor evoked potentials were recorded from the upper and lower limbs during cortical stimulation. All neurophysiological data were normal in patients who had received a standard radiation dose, while most of those who had been exposed to higher doses showed altered cortical SEPs and a slowing of central conduction time (D10-P1). Thus even though they were asymptomatic, these patients appeared to have sustained CNS damage, mainly at the level of the spinal cord.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00319702
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 65
    Electronic Resource
    Electronic Resource
    Popliteal cysts: a reassessment using magnetic resonance imaging (1991)
    Springer
    Skeletal radiology 20 (1991), S. 433-435 
    Details
    ISSN: 1432-2161
    Keywords: Popliteal cyst ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The advent of magnetic resonance imaging (MRI) prompted the reevaluation of the incidence of popliteal cyst and its associated injuries. We reviewed more than 1000 consecutive MRI examinations of the knee performed on patients referred for evaluation of internal derangement. We report a 5% incidence of popliteal cyst, which is lower than has previously been determined. We believe that the reported higher incidence was due to arthrographic distention of normal, collapsed bursae. The strong association between popliteal cyst and tear of the medial meniscus is confirmed. We report for the first time to our knowledge the 13% association between popliteal cyst and complete tear of the anterior cruciate ligament.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00191086
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 66
    Electronic Resource
    Electronic Resource
    Bursitis in association with solitary osteochondromas presenting as mass lesions (1991)
    Springer
    Skeletal radiology 20 (1991), S. 513-516 
    Details
    ISSN: 1432-2161
    Keywords: Solitary osteochondroma ; Bursa formation ; Computed tomography ; Magnetic resonance imaging ; Ultrasound
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Three patients with solitary osteochondromas which were increasing in size have been recently examined. Plain films were available on all patients; two patients had MR studies, and two had CT scans. In all three cases, malignant transformation of the osteochondroma was suspected from the cross-sectional imaging studies, but pathologic examination proved that these patients all had bursa formation without any evidence of malignancy. The incidence of this rare complication of solitary osteochondroma is discussed. Ultrasound is also recommended for the evaluation of enlarging solitary osteochondromas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00194249
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 67
    Electronic Resource
    Electronic Resource
    Idiopathic ischemic infarction of the brain stem in children (1991)
    Springer
    Child's nervous system 7 (1991), S. 305-308 
    Details
    ISSN: 1433-0350
    Keywords: Brain-stem infarction ; Occlusion ; Computed tomography ; Magnetic resonance imaging ; Angiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Three cases of idiopathic brain-stem infarction are added to the literature on 12 children. There is no age predilection, and the youngest case is 3 years old. However, there is a striking male preponderance of 13:2. The residual neurological deficit covers the range of normal to quadriparesis. Laboratory studies investigating hypercoagulopathy, platelet dysfunction and atrial septal defect may provide an etiology for some cases in the future.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00304825
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 68
    Electronic Resource
    Electronic Resource
    Malformations of the spinal cord in 53 patients with spina bifida studied by magnetic resonance imaging (1991)
    Springer
    Child's nervous system 7 (1991), S. 63-66 
    Details
    ISSN: 1433-0350
    Keywords: Spina bifida ; Spinal cord malformations ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The incidence of associated malformations of the hindbrain and spinal cord in patients with spina bifida was investigated by a clinical and magnetic resonance study. The incidence of these malformations in combination with spina bifida was 49/53 (92.5%). Fiftytree children born with spina bifida aperta (40 patients) or spina bifida occulta (13 patients) formed the study group. The incidence of the various malformations were: Chiari malformations, type I, 10/53 (19%), and type II, 20/53 (38%); syringomyelia, 13/53 (24.5%); hydromyelia 4/53 (7.5%); tethered cord malformation, 35/53 (66%); diastematomyelia 2/53 (4%). Thirty-seven of the 49 patients with associated malformations had no clinical signs at the time of our study. The results point to the fact that in the pediatric age group, associated spinal defects often remain asymptomatic.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00247858
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 69
    Electronic Resource
    Electronic Resource
    Brain stem auditory-evoked potentials in meningomyelocele (1991)
    Springer
    Child's nervous system 7 (1991), S. 316-326 
    Details
    ISSN: 1433-0350
    Keywords: Brain stem auditory-evoked potentials (BAEPs) ; Chiari II malformation ; Meningomyelocele ; Brain-stem function ; Chronological changes ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Brain stem auditory-evoked potentials (BAEPs) were recorded in 30 patients with meningomyelocele and shunted hydrocephalus ranging in age from birth to 33 years. Twenty-two of them had Chiari II malformation, one of which was symptomatic. In 22 cases, including 15 with Chiari II malformation, BAEPs were recorded repeatedly after periods ranging from 18 months to 7 years. The results were as follows: (1) III–V interpeak latency (IPL) decreased progressively from prolonged to the normal range with growth until 25 years of age; (2) I–III IPL tended to prolong gradually from the normal range; (3) these findings may indicate that the natural history of Chiari II malformation is delayed maturation of the brain stem and intensification in the elongation and stretching of the hindbrain and lower cranial nerves.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00304830
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 70
    Electronic Resource
    Electronic Resource
    Benign cyst of the paramedian pontine tegmentum (1991)
    Springer
    Child's nervous system 7 (1991), S. 347-352 
    Details
    ISSN: 1433-0350
    Keywords: Pontine cyst ; Benign brain-stem cyst ; One-and-a-half syndrome ; Horizontal gaze palsy ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A benign ovoid cyst, without an epithelial lining, localized in the paramedian pontine tegmentum, was examined by computed tomography (CT) and magnetic resonance imaging (MRI) (25×15×15 mm) and successfully operated upon. The one-and-a-half syndrome (horizontal gaze palsy to the right and paralysis of adduction of the right eye) and ipsilateral “peripheral” VII nerve palsy dominated the clinical picture. Fenestration, 5 mm in diameter, of the cyst wall through the floor of the IV ventricle was performed and 2.6 ml of clear, colorless fluid was evacuated. Inspection of the cyst, using the operating microscope, revealed a smooth, white, glistening cavity with no evidence of other pathological tissue. Duraplasty was performed with allogenic pericardium. Neurological symptoms improved immediately after surgery. Light and electron microscopy of the cyst wall revealed a fibrillar astroglial network and fragments of ependyma at the ventricular side of the biopsy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00304835
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 71
    Electronic Resource
    Electronic Resource
    Hemorrhage associated with “bone crisis” in Gaucher's disease identified by magnetic resonance imaging (1991)
    Springer
    Skeletal radiology 20 (1991), S. 479-482 
    Details
    ISSN: 1432-2161
    Keywords: Gaucher's disease ; Bone hemorrhage ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Children suffering from Gaucher's disease were examined by magnetic resonance imaging (MRI) during a characteristic episode of “bone crisis”. An unexpectedly high intramedullary as well as subperiosteal signal was observed on both the T1 and T2-weighted sequences in 5 patients, suggesting a subacute hemorrhage or hematoma. It is conceivable that such a painful hemorrhage is an important component of the “bone crisis” phenomenon. Furthermore, in these cases this is a specific sign which may enable differentiation of bone crises from other types of bone pain associated with Gaucher's disease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00194240
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 72
    Electronic Resource
    Electronic Resource
    Superficial siderosis of the central nervous system (1991)
    Springer
    European archives of psychiatry and clinical neuroscience 241 (1991), S. 57-60 
    Details
    ISSN: 1433-8491
    Keywords: Superficial siderosis ; Chronic subarachnoid haemorrhage ; Triethylenetetramine ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The course of a patient suffering from superficial siderosis of the central nervous system for 37 years is presented and diagnostic and therapeutic approaches are evaluated. The syndrome is clinically defined by slowly progressing deafness, cerebellar ataxia, myelopathy and neuropsychological deficits in combination with recurrent xanthochromia of the cerebrospinal fluid with siderophages. The diagnosis may be confirmed by computed tomography, which shows degeneration of the cerebellar vermis, and by magnetic resonance imaging, demonstrating iron deposits on the surface of brain, brain stem and spinal cord. Therapy should seek to identify and remove the source of bleeding, since pharmacotherapy with iron-depleting drugs is of limited effectiveness.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02193756
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 73
    Electronic Resource
    Electronic Resource
    Neurosarcoidosis without systemic sarcoidosis (1991)
    Springer
    European archives of psychiatry and clinical neuroscience 240 (1991), S. 334-338 
    Details
    ISSN: 1433-8491
    Keywords: Sarcoidosis ; Cerebrospinal fluid ; Lysozyme ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Neurosarcoidosis is a well-recognised complication of systemic sarcoidosis but diagnosis may be difficult if there is no clear evidence of an extracerebral manifestation of the disease. We present the case of a 42-year-old woman with clinical features characteristic of cerebral sarcoidosis including tetraparesis, diabetes insipidus, diencephalic hyperphagia, personality changes, and memory loss. Diagnosis was supported by cerebrospinal fluid (CSF) findings and magnetic resonance imaging (MRI): CSF showed mild lymphocytic pleocytosis, intrathecal production of IgG without oligoclonal bands, and a raised level of lysozyme. MRI revealed multiple contrast-enhanced granulomas at the base of the brain with partial involvement of diencephalic and mesencephalic structures and parts of the spinal cord. There was no evidence of systemic manifestation of sarcoidosis. Administration of corticosteroids led to improvement of the symptoms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02279763
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 74
    Electronic Resource
    Electronic Resource
    MRI in tuberculous meningoencephalitis: report of four cases and review of the neuroimaging literature (1991)
    Springer
    Journal of neurology 238 (1991), S. 340-344 
    Details
    ISSN: 1432-1459
    Keywords: Tuberculous meningitis ; Magnetic resonance imaging ; Computed tomography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The contribution of MRI is reported in four adult patients with tuberculous meningoencephalitis (TbM) and with autopsy correlation in one. Contrast-enhanced T1-weighted MRI revealed the characteristic basal meningeal inflammation of TbM and its focal spreading into adjacent brain. Mixed and T2-weighted pulse sequences delineated a plethora of parenchymal abnormalities. Their relation to TbM was established by a close matching of the patient's neurological findings, contrast enhancement or a change in lesion size. The latter accurately reflected the clinical course in all patients. It remained difficult, however, to distinguish between ischaemic and inflammatory changes, which in some locations were intermixed even histologically. From our experience and that of other groups. MRI provides more diagnostic information in TbM than CT. Moreover, MRI promises to be a useful tool for monitoring treatment response.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00315335
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 75
    Electronic Resource
    Electronic Resource
    Two cases of cerebral toxoplasmosis in AIDS patients mimicking HIV-related dementia (1991)
    Springer
    Journal of neurology 238 (1991), S. 439-442 
    Details
    ISSN: 1432-1459
    Keywords: AIDS ; Cerebral toxoplasmosis ; Electrophysiological findings ; Magnetic resonance imaging ; Dementia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Two unusual cases of cerebral toxoplasmosis in AIDS patients are presented. Two homosexual males aged 33 and 52 years in CDC stage IV C1 complained of memory loss during the past 6 months, as well as weight loss and mild fever. They showed severe intellectual deterioration and discrete basal ganglia dysfunction. Motor performance and cognitive function as well as the conventional EEG findings were grossly abnormal. MRI was normal in the younger patient but showed signalintensive zones in the basal ganglia and cortical atrophy in the older one. CSF and serological antibody tests were normal; immunological function was severely impaired. The patients were diagnosed as late “HIV-related dementia”. Both deteriorated rapidly and died within a few weeks. Neuropathological examination revealed histologically severe Toxoplasma gondii encephalitis, involving the basal ganglia in particular. It is concluded that in AIDS patients with a severely impaired immune status cerebral opportunistic infection may present as dementia with mild basal ganglia impairment in the absence of other focal neurological signs or the characteristic radiological findings.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00314650
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 76
    Electronic Resource
    Electronic Resource
    Cervical intramedullary cavernous angioma with MRI-proven haemorrhages (1991)
    Springer
    Journal of neurology 238 (1991), S. 420-426 
    Details
    ISSN: 1432-1459
    Keywords: Spinal cavernoma ; Magnetic resonance imaging ; Arteriovenous malformation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Two contrasting cases of cervical intramedullary cavernous angioma in young female patients are reported. One patient had a 3-year course of step-wise progressive tetraparesis; at each of the five events intramedullary bleeding from a cryptic vascular malformation at C6–7 level was diagnosed by MRI. The other patient presented with one episode which led to MRI diagnosis of a vascular malformation at the C2 level. Both patients eventually underwent complete surgical excision of the angioma with subsequent steady improvement of the neurological deficit.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00314647
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 77
    Electronic Resource
    Electronic Resource
    Acute and chronic neuroborreliosis with and without CNS involvement: a clinical, MRI, and HLA study of 27 cases (1991)
    Springer
    Journal of neurology 238 (1991), S. 271-280 
    Details
    ISSN: 1432-1459
    Keywords: Acute neuroborreliosis ; Chronic neuroborreliosis ; Central nervous system ; Magnetic resonance imaging ; HLA studies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Of the 96 serologically confirmed neuroborreliosis cases seen in our clinic between 1983 and 1988, 11 patients had mild to moderate and 4 patients had serious cerebral and/or spinal cord symptoms. Nine of these 15 patients with CNS involvement exhibited a primary chronic course of the illness. After high-dose intravenous therapy with penicillin, doxycycline or cefotaxime, given mostly in combination with cortisone, gradual recovery occurred with normalization of CSF findings characteristic of neuroborreliosis, and normalization of significantly elevated Borrelia burgdorferi IgG antibody titres in CSF and serum. Brain MRI and CT showed evidence of or were suggestive of vascular involvement which correlated with clinical symptoms in 11 of the 15 patients with CNS involvement. Brain MRI changes that were similar but much slighter in number and intensity were seen in 5 of 12 neuroborreliosis patients without clinical signs of CNS involvement (lymphocytic meningoradiculitis; Bannwarth's syndrome). The frequencies of the HLA-DR7 (75%), HLA-B44 (50%) and HLA-A29 (33%) antigens in 12 neuroborreliosis patients with clinical symptoms of CNS involvement were significantly different from the frequencies in 12 neuroborreliosis patients without CNS involvement and in 100 control subjects. Diagnostic criteria of active neuroborreliosis are proposed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00319739
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 78
    Electronic Resource
    Electronic Resource
    Neuropsychological assessment in multiple sclerosis: a follow-up study with magnetic resonance imaging (1991)
    Springer
    Journal of neurology 238 (1991), S. 395-400 
    Details
    ISSN: 1432-1459
    Keywords: Multiple sclerosis ; Magnetic resonance imaging ; Neuropsychological assessment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Nineteen moderately impaired patients with clinically definite multiple sclerosis and an initially relapsing-remitting course were included in a neuropsychological and magnetic resonance imaging (MRI) follow-up study. The average test/re-test interval was about 2 years. The neuropsychological findings were indicative of a very mild overall impairment; the patients, as a group, showed no evidence of cognitive deterioration in the follow-up period. A numerical estimation of the severity of cerebral demyelination shown by MRI did not indicate a significant change. No correlation between cognitive performance variations and MRI changes was found.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00319859
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 79
    Electronic Resource
    Electronic Resource
    Evaluation of facial fat distribution using magnetic resonance imaging (1991)
    Springer
    Aesthetic plastic surgery 15 (1991), S. 313-319 
    Details
    ISSN: 1432-5241
    Keywords: Magnetic resonance imaging ; Facial fat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Magnetic resonance imaging (MRI) provides noninvasive images of facial and neck fat for a variety of conditions. It accurately maps the soft tissues pre- and postoperatively, enabling surgeons to precisely and objectively assess results of soft tissue facial contouring and fat transplantation. The risks of MRI are few. It has the potential to provide aesthetic surgeons with a more “scientific” means of comparing various techniques of fat contouring.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02273879
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 80
    Electronic Resource
    Electronic Resource
    Complementarity of magnetic resonance spectroscopy, positron emission tomography and single photon emission tomography for the in vivo investigation of human cardiac metabolism and neurotransmission (1991)
    Springer
    European journal of nuclear medicine 18 (1991), S. 897-923 
    Details
    ISSN: 1619-7089
    Keywords: Magnetic resonance spectroscopy ; Magnetic resonance imaging ; Single photon emission computed tomography ; Positron emission tomography ; Metabolism ; Neurotransmission ; Myocardial perfusion ; Myocardial viability ; Coronary artery disease ; Cardiomyopathy ; Myocardial ischaemia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The three techniques allowing the noninvasive study of cardiac metabolism, namely magnetic resonance spectroscopy (MRS), positron emission tomography (PET) and single photon emission computed tomography (SPET), all use external detection with stable or radioactive isotopes. These techniques yield different information. PET is quantitative and very sensitive, and therefore only tracer amounts of molecules need to be injected. It allows neurotransmitters and receptors to be studied and a global view of metabolism (oxygen consumption, glucose and fatty acid utilization) to be obtained. SPET also has good sensitivity, but uses gamma-emitting isotopes of heteroatoms. Their longer half-lives allow follow-up for hours or days. MRS is based on stable elements with high (hydrogen 1, phosphorus 31, fluorine 19 ...) or low (carbon 13, Deuterium) natural abundance. It has very low sensitivity and only millimolar concentrations of substrates can be detected, but various parts of metabolism can be studied. The in vivo measurement of myocardial concentration of substances has many problems that are common to all three techniques (measurement of the volume, measurement of the quantity of each molecule, resolution, partial volume effect, improvement of the signal-to-noise ratio, movement of the organ). The complementarity of the techniques is illustrated by their applications to the study of cardiac metabolism. For instance, the energy metabolism can be studied by31P-MRS, which detects the high-energy compounds ATP and phosphocreatine, and13C-MRS yields information on the tricarboxylic acid cycle activity. PET and SPET allow the utilization of fatty acids, the normal fuels of the heart, to be studied. During ischaemia, PET with18F-fluorodeoxyglucose (18FDG) can determine the glucose consumption and1H-MRS shows the increase in lactic acid, reflecting anaerobic glycolysis. Comparison of the use of acetate labelled with11C for PET or13C for MRS shows the potentials and limitations of each technique. Myocardial perfusion can be evaluated directly with various PET tracers or indirectly with thallium 201 or various technetium-99m-labelled tracers by SPET. No MRS marker of perfusion is so far clinically available. Mainly SPET and PET are used clinically for the investigation of ischaemic heart disease as well as cardiomyopathies, but some initial results using31P-MRS are being obtained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02258457
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 81
    Electronic Resource
    Electronic Resource
    Muscle cross-section measurement by magnetic resonance imaging (1991)
    Springer
    European journal of applied physiology 63 (1991), S. 424-429 
    Details
    ISSN: 1439-6327
    Keywords: Magnetic resonance imaging ; Muscle size measurement
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Muscle cross-section areas were measured by magnetic resonance imaging (MRI) in the thigh of a human cadaver,. the results being compared with those obtained by photography of corresponding anatomic macroslices. A close correlation was found between MRI and photographic evaluation, differences between the methods ranging from nil to 9.5%, depending on the scan position and the muscle groups. In vivo MRI measurements were performed on 12 female and 16 male students, the objectivity, the test-retest reliability and the variability of the MRI measurements being studied by fixing the scan position either manually or by coronary scan. The latter method appeared to be more objective and reliable. The coefficients of variation for muscle cross-section areas measured by MRI were in the range of those for the planimetry of given cross-section areas. Allowing for differentiation between several small muscle bundles in a given area, MRI proved to be a suitable method to quantify muscle cross-sections for intra- and interindividual analysis of muscle size.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00868073
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 82
    Electronic Resource
    Electronic Resource
    Lumbar muscularity and its relationship with age, occupation and low back pain (1991)
    Springer
    European journal of applied physiology 63 (1991), S. 265-268 
    Details
    ISSN: 1439-6327
    Keywords: Paraspinal muscles ; Cross-sectional area ; Magnetic resonance imaging ; Low back pain
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary This paper considers an internal standard of lumbar muscularity. The cross-sectional areas (A cs) of the intervertebral disc and paraspinal muscles were measured in 147 working men from an axial magnetic resonance image passing through the L3-4 disc. Lumbar muscularity was expressed by two ratios; the ratio between the A cs of the right psoas and the A cs of the intervertebral disc (P:disc), and the ratio between the combined A cs values of the right erector spinae and quadratus lumborum and the A cs of the disc (ESQL:disc). When the subjects were divided into two age groups (76 aged 20–30 years and 71 aged 31–58 years) lumbar muscularity was found to be significantly greater (P 〈 0.001) in the younger age group (P:disc=0.8, SD 0.2; ESQL:disc=2.0, SD 0.3) than in the older age group (P:disc =0.7, SD 0.2; ESQL:disc=1.8, SD 0.3). Lumbar muscularity was not significantly affected by occupation or by a history of low back pain.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00233859
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 83
    Electronic Resource
    Electronic Resource
    Topography and mechanics of the cupula in the fish lateral line. I. Variation of cupular structure and composition in three dimensions (1991)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 207 (1991), S. 23-36 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The cupula of the supraorbital neuromast in the lateral line canal of the clown knifefish contains vertical columns. In the central region of the cupula overlying the macula, these columns are densely packed, are relatively constant in size, and run from the base of the cupula to the surface of the cupula which is exposed to canal fluid. There are two types of columns, dark and light, which form elliptical compartments in planes of section that cut across the columns; the cupula therefore has the appearance of mosaic tile in such sections. The dark compartments contain tubules that extend from the base of the cupula at the junction with the macula to the top of the cupula. Each tubule is associated with the kinocilium of a single hair cell. The lateral parts of the cupula, not overlying the macula, also contain compartments, but these compartments differ in size and structure from those in the central region. In addition to the compartments, the central region of the cupula also contains spherical aggregates of droplets. These small aggregates, termed mora, are found principally in a layer within the central region of the cupula, but are also found outside this layer. Because of their light-reflecting properties, the mora can be used for noninvasive optical measurements in vivo of the motion of the cupula.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1052070105
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 84
    Electronic Resource
    Electronic Resource
    Ultrastructure of the agranular cells in the adenohypophysis of the South American lungfish, Lepidosiren paradoxa (1991)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 207 (1991), S. 73-79 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Light and electron microscopic examination demonstrated two types of non-endocrine agranular cells, cavity boundary cells and stellate cells, in the adenohypophysis of the South American lungfish, Lepidosiren paradoxa. The cavity boundary cells line the hypophyseal cleft and diverticulum and display few microvilli, occasional cilia, prominent junctional complexes, and many cytoplasmic microfilaments. The stellate cells are scattered in the glandular parenchyma and are devoid of microvilli and cilia. When adjacent, they are connected to one another by desmosomes. Pinocytotic vesicles or caveolae are frequently seen along the plasma membrane of the agranular cells adjoining the endocrine cells or abutting on the basement membrane. Possible roles of the agranular cells, physically and metabolically supportive functions, are discussed on the basis of their ultrastractural features.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1052070109
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 85
    Electronic Resource
    Electronic Resource
    Organ of Bellonci of an Antarctic crustacean, the marine isopod Glyptonotus antarcticus (1991)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 207 (1991), S. 119-128 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The paired organ of Bellonci protrudes from the optic lobe of the giant Antarctic isopod, Glyptonotus antarcticus. It is linked to the cortex by a broad peduncle. No connection to the cuticle or “sensory pore organ” was found. A cluster of sensory-like cells forms two outer ciliary segments branching into numerous microvilli with microtubules. The putative sensory somata are irregular in shape and contain a very high density of glycogen granules. The two outer segments sprout from two pits of the soma in different directions, forming a right angle. Glial cells wrap around the sensory cells and also delimit lacunae into which bundles of microvilli project. These lacunae contain electron-dense granules of small size and with species-specific patterns. Lacunae and dense granules show features typical of a degeneration process in the sensory cells.This general morphology corresponds to the unilobular type of organ of Bellonci, known in other isopods; it differs from the plurilobular type with onion bodies found in other Crustacea.
    Additional Material: 20 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1052070202
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 86
    Electronic Resource
    Electronic Resource
    Surface and subsurface structures of neuromasts in tadpoles of the crab-eating frog, Rana cancrivora (1991)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 207 (1991), S. 157-164 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Neuromast structure in Rana cancrivora larvae was observed by scanning and transmission electron microscopy. Neuromast units, each being composed of two or three neuromasts, are arranged in several well-defined lines in the head, body, and tail regions. The structure of neuromasts in these three regions is basically identical. The neuromast is composed of sensory, sustentacular, and mantle cells. The top of each neuromast has a hillocklike appearance, and is surrounded by four to six epidermal cells with tight intercellular junctions. Long kinocilia and many stereocilia occur in the apex of the neuromasts and are surrounded by numerous microvilli. Numerous granules are present on the apical portions of the mantle and the sustentacular cells. Four or five trapeziform mantle cells are connected closely with each other to form the shell of the neuromast. Large intercellular spaces occur between the mantle cells and the cells of the inner epidermal layers, and between the cells of the inner epidermal layer. Thus, at the apical parts of the neuromast intercellular junctions are tight and the intercellular spaces are more dilated in more basal areas. Morphologically the neuromasts of R. cancrivora larvae resemble those of generalized pond anurans, based on the grouping of Lannoo (Journal of Morphology 191:115-129, 1987a), although larvae of this species inhabit brackish water.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1052070206
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 87
    Electronic Resource
    Electronic Resource
    Orbital gland structure and secretions in the Atlantic bottlenose dolphin (Tursiops truncatus) (1991)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 207 (1991), S. 173-184 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Orbital gland structure of the Atlantic bottlenose dolphin, Tursiops truncatus, was examined at the macroscopic, light microscopic, and electron microscopic levels. The gland completely encircles the ocular globe in a belt-like fashion near the conjunctival fornix but is considerably more developed medially. Duct openings are scattered throughout the fornix and over the surface of the palpebral conjunctiva. Microscopically, the gland has a tubuloalveolar arrangement; alveolar cells contain numerous secretory vesicles which can be interpreted as two structural types by light and electron microscopy. Histochemical staining demonstrates that both types contain glycosaminoglycans. Lipid analysis of the glandular secretion (dolphin tears) shows them to be non-oily and to contain only negligible amounts of cholesterol, triglycerides, phospholipids, and free fatty acids. The secretion is clear, slippery, and viscoelastic and well-adapted to protecting the eye and to reducing frictional forces between the eye surface and surrounding seawater.
    Additional Material: 14 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1052070208
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 88
    Electronic Resource
    Electronic Resource
    Dynamic shape of tapered skeletal muscle fibers (1991)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 207 (1991), S. 211-223 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The muscle fibers of the feline biceps femoris have tapered ends, across which tension is transmitted to the endomysium. The angle of taper of 11 ends, measured on scanning electron micrographs, varied between 0.16° and 1.18°. The muscle fibers are highly variable in cross-sectional shape. The shape of the fibers has been quantified as the ratio (form factor [FF]) of the measured perimeter to the calculated circumference of a circle having an area equal to that contained by the fiber perimeter. The FF for 173 terminal portions of fibers varied between 1.06 and 1.85 and was found to have a highly significant negative correlation with sarcomere length. The slope of the regression line suggests that the fibers maintain both volume and surface area as they change length. These studies suggest that isovolumic muscle fibers maintain a constant surface area by changing shape as they change length.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1052070212
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 89
    Electronic Resource
    Electronic Resource
    Configuration of the medial and lateral segments of duck (Anas platyrhynchos) salt glands (1991)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 207 (1991), S. 201-210 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Salt glands of the domestic duck Anas platyrhynchos differ from those of the herring gull Larus argentatus and other birds. In ducks, each salt gland consists of distinct medial and lateral segments. Centrally located drainage ducts that extend along the entire length of these medial and lateral segments collect hypertonic fluid secreted by an array of lobules. Each lobule is formed by a single mass of branched tubules in which the direction of capillary blood flow is opposite to that of the secreted fluid. This fluid drains from the medial segment through an external duct that opens into the nasal cavity at the base of the vestibular fold. A duct from the lateral segment loops and opens onto the surface of the nasal septum. The structure and function of the secretory cells is reviewed briefly within the context of our study of the configuration of duck nasal salt glands.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1052070211
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 90
    Electronic Resource
    Electronic Resource
    Masthead (1991)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 207 (1991) 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1052070201
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 91
    Electronic Resource
    Electronic Resource
    Venous drainage of the pelvic fins of rays (subclass elasmobranchii: Superorder Batoidea) (1991)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 207 (1991), S. 135-147 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: A contrast radiographic study of pelvic fin drainage in rays reveals considerable differences in patterns of drainage among the species studied. The “typical” shark pattern of drainage, to the lateral abdominal vein, is also found in rays with shark-like morphology. However, variation in the connections of pelvic fin veins to muscular and cutaneous vessels of the pectoral fin occurs in the more “derived” batoid groups, with marked differences between rays of similar external morphology and mode of locomotion. There is a positive association between the pattern of fin drainage and the number of radial cartilages in the posterior (metapterygial) lobe of the pectoral fin. Variation in shark pelvic fin drainage may also be related to differences in pectoral fin morphology.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1052070204
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 92
    Electronic Resource
    Electronic Resource
    Topography and nerve supply of the cucullaris (trapezius) of skates (1991)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 207 (1991), S. 165-172 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Dissections of Sudan black B stained specimens reveal that, of a complex of medial, intermediate, and lateral muscles of skates, presumed homologous to the cucullaris of sharks, only the lateral muscle is innervated by a branch or branches of the vagus and is inserted, in part, to the fused pharyngobranchials of the caudal visceral arches. The medial and intermediate muscles are supplied by separate branches of rostral spinal nerves and do not attach to the branchial skeleton. The lateral muscle therefore is the most likely homologue of the cucullaris (trapezius) of sharks and perhaps other fishes and tetrapods. The medial and intermediate muscles appear to be part of the axial musculature.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1052070207
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 93
    Electronic Resource
    Electronic Resource
    Masthead (1991)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 207 (1991) 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1052070301
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 94
    Electronic Resource
    Electronic Resource
    Presence of cells and fibers immunoreactive toward antibodies to different peptides or amine in the digestive tract of the snailHelix aspersa (1991)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 207 (1991), S. 185-190 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: An immunocytological study of four different parts of the gut of Helix aspersa clearly demonstrates the presence of many cells and fibers immunoreactive toward antibodies directed to vertebrate (α, β-endorphin, α, β-MSH, ACTH 1-24 and ACTH 17-39, met-enkephalin, somatostatin, insulin, glucagon, P.P., serotonin) or invertebrate (FMRF-amide) peptides.These results are evidence of the presence of different substances related to known peptides or amines in the epithelial and connective tissue cells and nerve fibers of the snail gut. Immunocytochemistry may help to elucidate the morpho-functional characteristics of the enteroendocrine cells of H. aspersa.
    Additional Material: 16 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1052070209
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 95
    Electronic Resource
    Electronic Resource
    Carbonic anhydrase activity in kidney and lower intestine of the European starling (1991)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 207 (1991), S. 273-281 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: A histochemical investigation of kidney and lower intestine of the European starling (Sturnus vulgaris) shows no carbonic anhydrase activity in proximal convoluted tubules, although activity is seen in similarly prepared sections of rat proximal tubules. Early distal tubule cells in the starling are stained throughout the cytoplasm and at the apical and highly infolded basolateral membranes. Late distal tubules lose apical activity and have reduced basolateral infolding, resulting in less intense staining. Darkly stained intercalated cells appear in the connecting tubules and cortical collecting ducts. Both of these segments also show intense basolateral staining. Medullary cones of the starling are highly organized, with central zones containing unstained thin descending limbs of loops of Henle, surrounded by both medullary collecting ducts with only scattered cells staining for enzyme, and by thick ascending limb segments. The latter contain many uniformly stained cells intermingled with occasional unstained cells. Scattered cells of the starling colonic villi demonstrate intense apical brush border membrane staining as well as cytoplasmic staining. Cells lining the cloaca stain less intensely. A biochemical assay for carbonic anhydrase was used to quantify enzyme activity in these tissues. Starling kidney contained 1.96 ± 0.33 (mean ± SEM) enzyme units/mg protein, less than half the activity seen in rat kidney. Stripped colonic epithelium contained 0.66 ± 0.15 enzyme units/mg protein. These quantitative results correlate well with the interpretations derived from the histochemical observations. The lack of proximal tubule carbonic anhydrase activity suggests that the avian kidney relies more on distal nephron segments to achieve net acidification of the urine.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1052070305
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 96
    Electronic Resource
    Electronic Resource
    Masthead (1991)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 208 (1991) 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1052080101
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 97
    Electronic Resource
    Electronic Resource
    Collagen type conservation during metamorphic repatterning of the dermal fibers in salamanders (1991)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 208 (1991), S. 99-107 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The orientation of the fibers in the dermis of the tiger salamander, Ambystoma tigrinum, undergoes a dramatic repatterning at metamorphosis. The pre-metamorphic, larval dermis is a tight layer composed of crossed fibers that wind helically around the trunk. This condition is retained by neotenic adults which do not undergo metamorphosis. In contrast, the metamorphosed adult dermis consists of a superficial, loose network of fibers invested with large multicellular glands - -the stratum spongiosum - and a deeper tight layer of fibers - the stratum densum. However, unlike the crossed fibers of the pre-metamorphic dermis, there is no preferred orientation to the fibers in either layer of the post-metamorphic dermis.In order to evaluate whether these two distinctly different fiber patterns are constructed from biochemically similar fibers, the collagen types present in the pre- and post-metamorphic dermis were determined using SDS-polyacrylamide gel electrophoresis. Type I collagen is the predominant collagen of the dermis and the same major collagen types are present for all individuals, whether preor post-metamorphic. Thus, the major types of collagen that compose the dermal fibers do not change during metamorphic repatterning of the dermis.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1052080105
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 98
    Electronic Resource
    Electronic Resource
    Masthead (1991)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 208 (1991) 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1052080201
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 99
    Electronic Resource
    Electronic Resource
    Selected aspects of spinning apparatus development in Araneus cavaticus (Araneae, Araneidae) (1991)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 208 (1991), S. 175-191 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: In the first half of this century, several workers observed small, seemingly glandular structures attached to the ampullate glands of spiders. Hence, they were termed accessory ampullate glands. In juvenile Araneus cavaticus, two pairs of these structures are present (starting at least with third instars), one pair attached to the major ampullate (MaA) glands and the other pair attached to the minor ampullate (MiA) glands. In adults, two pairs of accessory MaA glands and two pairs of accessory MiA glands are present. The two latter-formed pairs of accessory ampullate glands are clearly the remnants of those ampullate glands which atrophy shortly after adulthood is reached. Morphological similarities between these accessory ampullate glands and those present in juveniles provide an indication that the latter also have their origin in functional ampullate glands.A reduction in the number of ampullate glands following the last molt occurs in many spiders. The reason(s) for these reductions is unknown. In penultimate spiders close to ecdysis, we have observed that while the larger pairs of MaA and MiA glands (those that are retained in the adult) are undergoing molt-related changes which apparently render them nonfunctional, their smaller counterparts are seemingly unaffected and functional. This raises the possibility that the principal role of the smaller ampullate glands may be to assume functions during the pre-ecdysial period which are normally in the domain of the larger ampullate glands. If true, then their degeneration after the last molt would make economic sense.The presence of cylindrical spigots in juvenile females starting with fourth instars is documented.
    Additional Material: 32 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1052080204
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 100
    Electronic Resource
    Electronic Resource
    Masthead (1991)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 208 (1991) 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1052080301
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...