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  • 1
    Electronic Resource
    Electronic Resource
    Optimizing conventional cardiac MRI in the rabbit at 0.3 T (1993)
    Springer
    Pediatric radiology 23 (1993), S. 439-441 
    Details
    ISSN: 1432-1998
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The aim of this study was to define the most efficient way of performing cardiac MRI for anatomic information in small experimental animals, using a vertical magnetic field with a strength of 0.3 T (FONAR beta-3000M). This information may be used to improve cardiac MRI in infants and small children, since the size of a rabbit is considered comparable to that of a neonate. Experimental axial cardiac MRI studies were performed in a rabbit under general anesthesia in order to study the effects on image quality of changing various imaging parameters. These are ECG-gating, number of excitations (averages), number of warp levels, echo time (TE) and repetition time (TR). The effects of changing the size of the field of view (FOV), the slice thickness and the phase-encoding direction were also studied. We found that ECG-gating was crucial and that three excitations, TE 16 ms, and 257 vertical phase-encoding warp levels were adequate. Five-millimeter slice thickness and FOV 20 cm were preferred.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02012443
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  • 2
    Electronic Resource
    Electronic Resource
    Diagnosis of liver-spleen abscesses in children — with emphasis on ultrasound for the initial and follow-up examinations (1984)
    Springer
    Pediatric radiology 14 (1984), S. 198-204 
    Details
    ISSN: 1432-1998
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Seven children with hepatic and one with splenic abscess were evaluated using at least two of the following imaging modalities: ultrasound, radionuclide liver-spleen scan, computed tomography (CT) and angiography. Seven children had pyogenic, and one mixed pyogenic-amebic abscess. In all cases ultrasound demonstrated the lesions, which in 6/7 of hepatic abscesses were located only to the right liver lobe.99mTc-sulphur colloid liver-spleen scans were positive in 4/4 cases while67Ga failed to demonstrate 2/2 lesions. CT gave additional information in regard to etiology of lesions observed at ultrasound examination. Angiography performed in four cases showed vessel displacement by poorly vascularized mass lesions and arterioportal shunting in one but, overall, did not contribute to patient management. In clinically suggested hepatic-splenic abscesses, ultrasound together with CT will provide the diagnostic information needed for treatment. Follow-up studies should be performed by ultrasound.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01042240
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Ultrasonographic demonstration of systemic artery feeding extrapulmonary sequestration (1984)
    Springer
    Pediatric radiology 14 (1984), S. 226-227 
    Details
    ISSN: 1432-1998
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract An extralobar pulmonary sequestration in an infant was diagnosed by ultrasound. The sequestration appeared as an echogenic mass interpositioned between the liver and the right lung. The main feeding vessel of the sequestration was demonstrable. Ultrasound should be the first diagnostic modality used for evaluation of a supraphrenic chest mass seen on chest roentgenogram in childhood.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01042246
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  • 4
    Electronic Resource
    Electronic Resource
    Mediastinal pseudomass: Pneumonia and atelectasis behind the left pulmonary ligament (1987)
    Springer
    Pediatric radiology 17 (1987), S. 451-453 
    Details
    ISSN: 1432-1998
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In children, left lower lobe pneumonia posterior to the pulmonary ligament may mimic a paramediastinal mass. Over a period of 6 years we have seen 12 children with this unusual appearance, which we attribute to a peculiar type of atelectasis or infiltration of the left lower lobe or a segment of it. The radiographic appearance is thought to be the result of incomplete anchoring of the left lung by a short pulmonary ligament. The radiographic findings are demonstrated, and the benign clinical course is emphasized.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02388276
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  • 5
    Electronic Resource
    Electronic Resource
    Complex congenital heart malformation evaluated with MR imaging at 0.3 T (1996)
    Springer
    Pediatric radiology 26 (1996), S. 470-477 
    Details
    ISSN: 1432-1998
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The aim of this study was to evaluate the efficiency of MR imaging at 0.3 T as the single modality in diagnosing complex congenital heart disease (CHD). Films from 45 cases were reviewed in two stages by four specialists and one fellow in pediatric radiology, who were unfamiliar with the patients. First a general review of CHD diagnosis was made, then a detailed study of anomalous venous return was performed. Regarding the general diagnosis of cardiovascular anomalies the results were good, with sensitivity of 80 %, specificity of 96 %, a positive predictive value of 88 %, a negative predictive value of 93 % and accuracy of 92 %. As expected, the less experienced reviewer had somewhat lower figures. As for detailed evaluation of the anomalous veins, the diagnostic results were again good (sensitivity 85 %), although less so when also the connection sites of the anomalous veins were considered (sensitivity 79 %). The specificity of the findings was high at 97 %. MR imaging at 0.3 T is valuable in the diagnosis of complex CHD, especially for anomalous vessels and their connections.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01377204
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  • 6
    Electronic Resource
    Electronic Resource
    Giant-cell tumor of bone and aneurysmal bone cyst (1977)
    Springer
    Skeletal radiology 2 (1977), S. 65-74 
    Details
    ISSN: 1432-2161
    Keywords: Giant-cell tumor ; Aneurysmal bone cyst ; Angiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A correlated histologic and radiographic study of nine giant-cell tumors, six aneurysmal bone cysts, and one combined lesion is presented. Clinical findings and plain radiographic appearances were found to overlap. Angiographically, the giant-cell tumors were richly vascularized, with a marked intratumoral contrast uptake, occasional irregular tumor vessles, a prominent peritumoral arterial net-work, and early draining veins. Microscopic examination revealed fine, capillary-like and somewhat larger, angulated, sinusoid vessels, and occasional small, bloodfilled cysts within the tumor. Conspicuous arteries, veins, and capillaries surrounded the tumor. The aneurysmal bone cysts at angiography were predominantly avascular in the interior, surrounded by a thin hyperemic zone in the peritumoral tissue, with sometimes early filling of veins. Microscopically, the aneurysmal bone cysts showed large, anastomosing, bloodfilled vascular channels, and a moderate number of capillaries within the solid, fibrous areas and the granulation tissue. It is concluded that angiography, particularly with a subtraction technique, may be a valuable diagnostic method in the pre-operative differentiation of giant-cell tumors from aneurysmal bone cysts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00360984
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  • 7
    Electronic Resource
    Electronic Resource
    Late recurrence of giant-cell tumor of bone: Pharmacoangiographic evaluation (1980)
    Springer
    Skeletal radiology 5 (1980), S. 227-231 
    Details
    ISSN: 1432-2161
    Keywords: Giant-cell tumor of bone ; Giant-cell tumor recurrence ; Angiography ; Pharmacoangiography ; Bone neoplasm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Late recurrence (more than five years) of benign giant-cell tumor of bone is uncommon. Two patients were evaluated by angiography, including injection of vasoactive drugs, because of osteolytic lesions developing six and seven years after primary operation for benign giant-cell tumor. Angiography established a probable recurrence in both cases. Angiography also permitted accurate evaluation of tumor extension, facilitating pre-operative planning. Giant-cell tumors are predominantly hypervascular lesions. Angiographic evaluation is therefore recommended when a recurrent lesion is suspected.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00580595
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  • 8
    Electronic Resource
    Electronic Resource
    Supination-adduction injuries of the ankle in children-radiographical classification and treatment (1983)
    Springer
    Archives of orthopaedic and trauma surgery 101 (1983), S. 193-200 
    Details
    ISSN: 1434-3916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Diagnostische und therapeutische Probleme in Zusammenhang nit Supinations-Adduktions-Verletzungen des oberen Sprunggelenkes werden vorgestellt. In einer retrospektiven Studie bei 919 Kindern im Alter von 0–18 Jahren wurden 457 Knöchelfrakturen zusammengestellt. Die Frakturen wurden in ihren anatomischen Kriterien nach Salter und Harris und bezüglich des Unfallmechanismus nach Gerner-Smidt klassifiziert. Von 147 Frakturen, die auf ein Supinations-Adduktions-Trauma zurück-geführt wurden, hatten 128 offene Wachstumsfugen. Die erste Verletzungsstufe nach Typ Salter-Harries I, II oder III nit Frakturen durch den Außen-knöchel oder isolierte Epiphysenfrakturen ohne Verletzung der Wachstumsfuge, kann leicht übersehen werden und ist wahrscheinlich häufiger als früher festgestellt. Die zweite Verletzungsstufe nit zusätzlich einer senkrechten oder schrägen Fraktur des Innenknö-chels, die sich gelegentlich bis in die Wachstumsfuge und die Metaphyse erstreckt, ist auf der Röntgenauf-nahme meist viel leichter zu erkennen. Bei Supinations-Adduktions-Verletzungen ist das häufigste Lebensalfer niedriger als bei Supinations-Außenrotations-Verletzungen. Die Supinations-Adduktions-Verletzung ist die zweithäufigste Knöchelfraktur bei Kindern (32%) und wird an Häufigkeit nur durch die Supinations-Außenrotations-Verlet-zung (39%) übertroffen. Eine frühe Erkennung des Supinations-Adduktions-Frakturtyps ist wichtig, weil Wachstumsstörun-gen und Gelenkschäden nicht selten sind, wenn auch eine Innenknöchelfraktur besteht. Die Notwendigkeit einer korrekten Erkennung und Behandlung wird durch das Risiko von Spätproblemen unterstrichen.
    Notes: Summary Diagnostical and therapeutical problems associated with supination-adduction injuries are presented. 457 ankle fractures were collected from a retrospective material of 919 children aged 0–18 years with fractures of the tibio-fibular shaft or the ankle. The ankle fractures were classified anatomically according to Salter and Harris and traumatologically according to Gerner-Smidt.147 fractures were classified as due to supination-adduction, of which 128 had open growth plates. The first stage, a Salter-Harris type I, II, or III fracture through the lateral malleolus or only epiphyseal fracture without fracture through the growth plate, is easily overlooked and is probably more common than earlier registered. The stage II injury with, in addition, a vertical or oblique fracture of the medial malleolus sometimes continuing through the physis and metaphysis is often more easily recognized at the radiographical examination. The mean age of supination-adduction injuries is lower than for supination-eversion injuries. The supination-adduction injuries are the second most common type of ankle fractures in children (32%) only exceeded by injuries due to supination-eversion (39%). Early recognition of the fracture pattern of supination-adduction injuries is important as growth disturbance and joint problems are not uncommon when there is fracture through the medial malleolus. The need for correct diagnosis and treatment is stressed by the risk for late problems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00436771
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  • 9
    Electronic Resource
    Electronic Resource
    Spontaneous hemothorax from bronchopulmonary sequestration Unusual angiographic and pathologic-anatomic findings (1980)
    Springer
    Pediatric radiology 10 (1980), S. 54-56 
    Details
    ISSN: 1432-1998
    Keywords: Bronchopulmonary sequestration ; Hemothorax ; Arteritis ; Angiography ; Aneurysms ; Acute glomerulonephritis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract An eight year old girl with acute glomerulonephritis developed a massive hemothorax without previous trauma. Angiography demonstrated a bronchopulmonary sequestration with multiple arterial aneurysms. Surgical treatment was successful. Pathologic-anatomic examination revealed arteritis of the type seen in the postcoarctectomy syndrome.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01644345
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  • 10
    Electronic Resource
    Electronic Resource
    Intralobar bronchopulmonary sequestration in the newborn – a congenital malformation (1999)
    Springer
    Pediatric radiology 29 (1999), S. 174-178 
    Details
    ISSN: 1432-1998
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background. Intralobar sequestration (ILS) has been suggested to be an acquired lesion. However, we have observed several young infants who had ILS. Objectives. Since this fact seems to indicate a congenital origin, we reviewed our experience. Material and methods. A retrospective review of bronchopulmonary sequestration from the Departments of Radiology and Pathology in Lund between 1964 and 1997. Results. We identified seven infants or young children with a diagnosis of intralobar sequestration. In each patient, the ILS was present before recurrent infection developed. Five had chest X-rays as neonates, one at 3 months and one at 11 months of age. All but one showed an abnormality on their first chest X-ray, consistent with sequestration. Six of the ILS were verified at angiography; all seven were surgically removed. Two of the children with ILS also had congenital cystic adenomatoid malformation (CCAM). Three children had both ILS and scimitar syndrome. Conclusions. The fact that ILS was present in seven newborn and young infants indicates that this lesion is, at least in some patients, a congenital malformation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002470050565
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