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
  • 1
    Electronic Resource
    Electronic Resource
    Milzszintigraphie mit113mIndium-markierten Erythrozyten (1970)
    Springer
    Annals of hematology 21 (1970), S. 162-167 
    Details
    ISSN: 1432-0584
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary It was tried to improve spleen scintigraphy with113mIndium, using simple preparation techniques for labelling erythrocytes. Methods and results are discused.
    Notes: Zusammenfassung Die vorliegende Arbeit schildert den Versuch, durch einfache präparative Maßnahmen die szintigraphische Milzdarstellung mit113mIn zu verbessern. Präparationsmethoden und Ergebnisse werden besprochen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01675272
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    The 3rd annual congress of the European society of skeletal radiology (1996)
    Springer
    European radiology 6 (1996), S. C3 
    Details
    ISSN: 1432-1084
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00187690
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Imaging of avascular necrosis of bone (1997)
    Springer
    European radiology 7 (1997), S. 180-186 
    Details
    ISSN: 1432-1084
    Keywords: Key words: AVN ; Pathophysiology ; Imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. The etiology of avascular necrosis (AVN) is multifactorial. Independent of its etiology and localization it shows typical pathologies and radiological images. In the early stages localized subchondral edema is characteristic. In 50 % of all cases accompanying joint effusion may be found. Due to necrosis of the cells of bone marrow and bone fibrovascular, reactions with hyperemia can be delineated. These reactions allow us to visualize necrosis indirectly. The best imaging methods are MRI and, to a lesser extent, bone scintigraphy. In later stages calcification as well as new bone formation and microfractures are typically demonstrated and visualized best with plain X-rays and CT. Why reparations in many cases, particularly in the hip, are incomplete and may stop in any stage is unknown. Over years clinically complete silent AVNs are not an uncommon finding. Prognosis depends on the localization and size of the AVN. The number of repair mechanisms is best outlined with contrast-enhanced MRI and return of fatty marrow.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300050131
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    In vitro behaviour of mechanical heart valves in a 1.5 T superconducting magnet (1992)
    Springer
    European radiology 2 (1992), S. 555-558 
    Details
    ISSN: 1432-1084
    Keywords: Magnetic resonance imaging ; Mechanical heart valves ; Deflection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract During in vitro tests, we exposed seven mechanical cardiac valves to a 1.5 Tesla magnetic field and measured their deflection and temperature changes during a gradient-echo sequence. We used a special suspension system which indicated and measured the largest deflection at the entrance to the tube and any deflections within the gradient field. A temperature sensor measured changes in temperature in the valve ring in both air and in a water bath during exposure to a high-frequency field. The Bjork-Shiley (Shiley Irvine, CA, USA) valve displayed the most deflection at the entrance to the coil, namely 1.8 mm. All the other valve models displayed less deflection. No deflection took place during gradient-echo sequences. Three valve models displayed an increase in valve ring temperature. The Medtronic valve displayed the largest increase with 0.6°C.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00187551
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Radiological diagnosis of osteoporosis (1997)
    Springer
    European radiology 7 (1997), S. S11 
    Details
    ISSN: 1432-1084
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00006859
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Imaging of trabecular bone structure in osteoporosis (1999)
    Springer
    European radiology 9 (1999), S. 1781-1788 
    Details
    ISSN: 1432-1084
    Keywords: Key words: Osteoporosis ; Trabecular bone ; Bone structure ; Texture analysis ; Bone mineral density
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Osteoporosis is a metabolic bone disorder that is characterized by reduced bone mass and a deterioration of bone structure which results in an increased fracture risk. Since the disease is preventable, diagnostic techniques are of major importance. Standard techniques determine bone mineral density, whereas some of the newer techniques focus on trabecular structure. This article reviews structure analysis techniques in the diagnosis of osteoporosis. Imaging techniques applied to the assessment of trabecular bone structure include conventional radiography, magnification radiography, high-resolution CT (HRCT) and high-resolution MR imaging (HRMRI). The best results were obtained using high-resolution tomographic techniques. The highest spatial resolutions in vivo were achieved using HRMRI. The most common texture analysis techniques that have been used are morphological parameters (analogous to bone histomorphometry). Fractal dimension, co-occurrence matrices, mathematical filter techniques and autocorrelation functions are more complex techniques. Most of the studies evaluating structure analysis show that texture parameters and bone mineral density both predict bone strength and osteoporotic fractures, and that combining both techniques yields the best results in the diagnosis of osteoporosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300050922
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Precision of three-dimensional CT-assisted model production in the maxillofacial area (1992)
    Springer
    European radiology 2 (1992), S. 473-477 
    Details
    ISSN: 1432-1084
    Keywords: Three dimensional ; Computed tomography ; Individual skull model
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Individual skull model fabrication was introduced into preoperative diagnostics in maxillofacial surgery in the mid-1980s. The aim of the present study was to collect information on the reproducibility of a skull model milled from hardened polyurethane foam. This model was based on the CT data of a real skull. Twenty comparative studies were carried out on both the model and the original skull, the model showing an average inaccuracy of 1.6 mm. The deviations ranged between 0.0 and 3.6 mm; the general trend favouring enlargements. The total deviation of the model as compared to the original skull was 1.8%. A convincing aspect of the model, which cannot be obtained by any other method, is its plasticity and the possibility of 3 D orientation on a lifesize model. This new method is already used in preoperative planning of corrections of post-traumatic defects and craniofacial deformities as well as in tumour surgery.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00176356
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Effect of CNTF on ischaemic cell damage in rat hippocampus (1996)
    Springer
    Acta neurochirurgica 138 (1996), S. 580-583 
    Details
    ISSN: 0942-0940
    Keywords: Ciliary neurotrophic factor (CNTF) ; cerebral ischaemia ; delayed neuronal cell death ; rat hippocampus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The neuroprotective effect of neurotrophic factors has been demonstrated in experimental cerebral ischaemia recently. These include nerve growth factor (NGF), brain-derived neurotrophic factor (BDNF), insulin-like growth factor-1 (IGF-1), and basic fibroblast growth factor (basic FGF). The neuroprotective effect of ciliary neurotrophic factor (CNTF), however, has not been studied so far. We have examined the neuroprotective effect of recombinant rat CNTF in a rat forebrain ischaemia model. A continuous infusion of CNTF was started 1 week before the induction of ischaemia and continued until 1 week after the ischaemia. Reversible forebrain ischaemia was induced by 7 minutes of bilateral carotid occlusion with hypotension. Neuronal cell death in the hippocampal CA1 sector was evaluated 1 week after the ischaemia. For the control group artificial CSF (cerebrospinal fluid) was infused instead of CNTF. Per cent neuronal cell death was 83.4 ± 5.9% (mean ± SEM, n=5) in the control group, and 71.1 ± 10.0% (mean ± SEM, n=5) in the CNTF group. Although percentage of neuronal cell death was lower in the CNTF group, the difference was not statistically significant. This result suggests that the protective effect of CNTF in the rat forebrain ischaemia model may be limited compared with other neurotrophic factors. It is considered that the number of neurons protected by CNTF may be small.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01411179
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Thermal diffusion blood flow monitoring during aneurysm surgery (1996)
    Springer
    Acta neurochirurgica 138 (1996), S. 726-731 
    Details
    ISSN: 0942-0940
    Keywords: Thermal diffusion ; cerebral blood flow ; temporary clipping ; cerebral aneurysm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Cortical blood flow (CoBF) monitoring with a thermal diffusion flow probe was performed during the clipping of aneurysms of the ICA and MCA regions, on a series of patients during the acute stage of subarachnoid haemorrhage. Emphasis was placed on the CoBF recovery after temporary clip release. Since the absolute value in this technique is unreliable, recovery of blood flow after temporary clipping is represented as %CoBF according to the following equation: %CoBF recovery = (CoBFpost-CoBFintra)/(CoBFpre-CoBFintra) Presumably, this parameter checks the patency of the concerned cerebral vessels during clipping and/or release. Percent recovery of more than 100%, indicating postischaemic reactive hyperaemia, was observed immediately after release of the temporary clips in 8 of the 9 cases evaluated. In one case, with prolonged temporary clipping (37 min), no immediate recovery was observed after clip release, suggesting no-reflow phenomenon. The value slowly recovered after local administration of papaverin and returned to the pre-occlusion level within 20 minutes. Thermal diffusion CoBF monitoring may be useful in detecting the possible no-reflow phenomenon, that may lead to ischaemic complication, even after successful aneurysm clipping.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01411479
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Correlation Between Jugular Bulb Oxygen Saturation and Partial Pressure of Brain Tissue Oxygen During CO2 and O2 Reactivity Tests in Severely Head-Injured Patients (1999)
    Springer
    Acta neurochirurgica 141 (1999), S. 825-834 
    Details
    ISSN: 0942-0940
    Keywords: Keywords: Head injury; brain tissue oxygen pressure; jugular bulb oxygen saturation; CO2 and O2 reactivity.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary  Purpose. To correlate the jugular bulb oxygen saturation (SjvO2) and brain tissue oxygen pressure (PbtO2) during carbon dioxide (CO2) and oxygen (O2) reactivity tests in severely head-injured patients.  Methods and Results. In nine patients (7 men, 2 women, age: 26±6.5 years, GCS of 6.5±2.9), a polarographic microcatheter (Clark-type) was inserted into nonlesioned white matter (frontal lobe). PbtO2 and SjvO2 were monitored simultaneously and cerebral vasoreactivity to CO2 and O2 was tested on days three, five and seven after injury. Simultaneous measurements of vasoreactivity by transcranial Doppler (TCD) were undertaken. A total of twenty-one CO2 and O2 reactivity tests were performed. Critical values of PbtO2 (〈15 mm Hg) during induced hyperventilation could be observed four times in two patients. High PbtO2 values up to 80 mm Hg were observed during hyperoxygenation (FiO2 100%). CO2 vasoreactivity by means of PbtO2 was absent in four tests in which measurements by TCD showed intact responses. A stronger correlation between SjvO2 and PbtO2 during the O2 reactivity tests was observed (r=0.6, p〈0.001), in comparison to values obtained during the CO2 reactivity tests (r=0.33, p〈0.001). In addition, there was no statistically significant correlation (r=0.22, p=0.26) between CO2 reactivity values measured by TCD (4.5±5.7%) and PbtO2 (3±2.8%).  Conclusions. Correlation between SjvO2 and PbtO2 during CO2 reactivity test is low, even if significant differences between normo- and hyperventilation values are present. In comparison to SjvO2, monitoring of PbtO2 might more accurately detect possible focal ischaemic events during rapidly induced hyperventilation in severely head-injured patients. The CO2 vasoreactivity by means of changes in Vm MCA seems to be higher in comparison to changes of PbtO2. These observations lead to the hypothesis that vasoreactivity measured by TCD overestimates the cerebrovascular response to CO2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s007010050383
    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...