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SCANNING OF INTRAVENTRICULAR AND INTRATHECAL 131IHSA Kazumi Toyama 1,2 , Koosaku Nakayama 1 , Hiroyuki Nemoto 1 , Hisao Shida 3 , Hiroichi Aoki 4 1Department of Neurosurgery Seirei Hamamatsu Hospital 3Department of Radiology National Mito Hospital 4Department of Neurosurgery Brain Research Institute, Niigata, University School of Medicine pp.53-63
Published Date 1971/1/1
DOI https://doi.org/10.11477/mf.1406202842
  • Abstract
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Doses of 30-150 ,μCi of 131IHSA were injected into the ventricular and spinal C. S. F., the patterns of 131IHSA distribution in the C. S. F. cavity, and the transference of 131IHSA to the blood were ex-amined. We found the diagnostic values and some problems of these method as follows,

1. In the Cases of Hydrocephalus, the findings of Intraventricular 131HSA scanning were not suf-ficient to make correct Diagnosis of noncommunicat-ing hydrocephalus.

Intrathecal 131IHSA scanning might be needed.

2. The detection of the patency of shunt oper-ation was impossible by the scanning using 131IHSA, but the alteration of the counts in the blood gave referable information on this problem.

3. 131IHSA injected into the Lumbal C. S. F. reached the Basal cistern between 2-4 hours later. Slower cranialward movement of 131IHSA suggested the abnormality of C. S. F. flow.

4. Intrathecal 131IHSA scanning was thought to be the most effective method to differenciate "nor-mal" pressure hydrocephalus from hydrocephalus "ex vacuo."

5. To discover C. S. F. Rhinorrhea, Intrathecal 131IHSA was also the method required.

6. The measurement of 131IHSA transference to the blood under the strict and correct condition will be able to give us much useful information about the dynamics of C. S. F.

7. We feel it is meanless to classify hydroce-phalus to be communicating and noncommunicat-ing. From the point of view of C. S. F. dynamics, more appropriate clasfications have to be considered.

8. The examination using Isotopes has many advantages in making clear the causes of diseases such as Intracerebral cysts or Subdural cellection of C. S. F. or others.


Copyright © 1971, 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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