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  • Magnetic resonance imaging  (1)
  • Multiple sclerosis  (1)
  • sequential renal scintigraphy  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Urological research 3 (1975), S. 81-85 
    ISSN: 1434-0879
    Keywords: Radioisotope renography ; sequential renal scintigraphy ; individual 131I-Hippuran clearance ; experimentally controlled renal perfusion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The radioisotope renogram and renal clearances using 131I-Hippurate were studied during experimentally controlled renal perfusion. In the first series of experiments, renograms were recorded during variations in renal blood flow produced by an extracorporeal pump circuit. There was a close correlation between renal blood flow and renogram parameters. These characteristics were also related to urine flow rates. —In the second series of experiments, unilateral renal damage was produced either by ischaemia or obstruction. Individual clearances using 131I-Hippurate and the gamma camera were compared with standard clearances obtained during a steady state. There was a close correlation between these methods and the results emphasise the importance of subtracting, background radioactivity. — It is concluded that the main value of the renogram is to provide a left to right comparison of renal tubular function whereas the value of corrected 131I-Hippuran clearances is to provide an absolute measure of individual effective renal plasma flow.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of neurology 234 (1987), S. 401-407 
    ISSN: 1432-1459
    Keywords: Multiple sclerosis ; Tetraparesis ; Paraparesis ; Spinal tumour ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The clinical, neuroradiological, electrophysiological and CSF findings of seven patients with slowly progressive paraparesis or tetraparesis are presented. In all patients, the results of the tests performed, including evoked potentials, CT scanning, oligoclonal bands in the CSF and myelography, were normal or inconclusive and did not lead to the correct diagnosis of the aetiology. In contrast, magnetic resonance imaging (MRI) provided the diagnosis of the causative process: multiple sclerosis in four cases, meningioma of the craniocervical junction or upper thoracic spinal cord in two cases, and upper cervical cord low-grade astrocytoma in one case. The patients with tumour could be treated effectively. Without MRI, however, the correct diagnosis would have been delayed. T2-weighted spin-echo scans provided maximal sensitivity for the detection of MS plaques, although they lacked specificity for a special disease. Several morphological criteria during MRI were helpful in differentiating Binswanger's disease, leucodystrophy and adrenoleucodystrophy from MS. It is concluded that at present MRI is the only non-invasive test with which to screen reliably the craniocervical junction and the upper cervical level, both of which are diagnostically difficult regions. The case histories also demonstrate that MRI is essential in all patients where a full clinical evaluation of the suspected spinal segment is not possible. “Pure spinal MS” is a misleading diagnosis and should not be accepted without confirmation by MRI. MRI has to be performed early enough to permit timely treatment of spinal and brain-stem disorders.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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