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High-field-strength Magnetic Resonance Imaging and SPECT of Multiple System Atrophy Ichiro Kohira 1 , Shoshiro Okada 1 , Hideki Ishizu 1 , Toshikiyo Shohmori 1 , Yosuke Matsumoto 2 , Shigetoshi Kuroda 2 1Department of Neurology, Okayama University Medical School 2Department of Neuropsychiatry, Okayama University Medical School Keyword: striatonigral degeneration , olivopontocerebellar atrophy , multiple system atrophy , magnetic resonance imaging , SPECT pp.899-904
Published Date 1992/10/1
DOI https://doi.org/10.11477/mf.1406900390
  • Abstract
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Two cases of multiple system atrophy (MSA) showing similar abnormalities by magnetic reso-nance (MR) imaging and SPECT are reported. The clinical diagnoses of the two cases were striatoni-gral degeneration (SND) and sporadic olivopon-tocerebellar atrophy (OPCA) . In addition, one case of sporadic OPCA without parkinsonism was usedfor comparison.

The MR images were obtained using a 1.5-T MR system and included spin-echo transverse sections with Tl-weighted images (TR=450 ms and TE=15 ms) and T2-weighted images (TR=2500 ms and TE=90 ms). The Tl-weighted images demonstrat-ed atrophy of cerebellum and pons, with increased signal intensity in the bilateral putamen. The T2-weighted images demonstrated decreased signalintensity in the putamen, as reported recently. SPECT demonstrated reduced uptake in the cel-leberum, basal ganglia and frontal lobe cortex.

The putaminal changes evident on T1-weighted images may have resulted from deposition of pig-ments such as neuromelanin and lipofuscin, related to parkinsonism. Both T1- and T2-weighted MRI seem to be useful clinical diagnosis of MSA.


Copyright © 1992, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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