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CEREBRAL HEMODYNAMICS MEASUREMENT WITH RADIOISOTOPES IN ARTERIO-VENOUS MALFORMATION Masami KITANO 1 , Mizuo KAGAWA 1 , Yoshinobu ISHIDA 1 , Toru MINE 1 , Masahiro MIZUKAMI 1 1Dept. of Neurosurgery, Keio Univ, School of Medicine pp.443-449
Published Date 1968/5/1
DOI https://doi.org/10.11477/mf.1406202373

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  • Abstract
  • Look Inside

1. Following rapid intravenous injection of I-4-iodo antipyrine large arteriovenous shunts can be detected by initial peak while shown the plateau level in normals on the curve representing the cranial isotope content.

2. This peak is attributed to the failure of an-tipyrine passing through the shunt to equillibrate with brain water, as normally occurs upon passage through the brain capillary bed.

3. This initial peak representing the A-V shunt is aggravated following hyperventilation. This might be secondary to the shift of blood flow to the shunt from normal brain capillary. (intracerebral blood steal phenomenl.

4. The ratio between the healthy hemisphere and the hemisphere with the shunt is nearly one, while the blood flow shift to the healthy hemisphere can be seen following hyperventilation in some cases.

5. The size and the appearance of initial peak is farely proportional to the clinical course or the results of the surgical treatment.

6. Brain transit time and arm to head circula-tion time are shortened in A-V malformation which indicate the increased speed of cerebral blood flow.

7. The test is extremely atraumatic and is suggested as a screening test or as a means of repeatedly studying the pathophysiologically of A-V shunting.


Copyright © 1968, 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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