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EXPERIMENTAL STUDY OF CEREBRAL VASOSPASM:VASOSPASM OF THE CIRCLE OF WILLIS Shigeharu Suzuki 1 1Division of Neurosurgery, Institute of Brain Diseases, Tohoku University School of Medicine pp.393-403
Published Date 1970/4/1
DOI https://doi.org/10.11477/mf.1406202703
  • Abstract
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Though it had been impossible to observe a complete view of the circle of Willis simultaneously in animal experiments, a new method to be able to observe the vasospasm of the circle of Willis was deviced in this study. That was named as quick-freezing-fixation with microangiographical tech-nique.

By this method, the cerebral vasospasm of the base of the brain in responce to subarachnoid hem-orrhage was studied in anesthetized cats and dogs.

In this experiment, 24 cats and 13 dogs were used as material and the fresh autoblood and the auto-bloood incubated in 37°C during 2 to 10 days were employed to make an artificial subarachnoid hemo-rrhage. And the following results were obtained.

(1) The new method, quick-freezing-fixation with microangiographical technique, was seemed to be very usefull to observe the dynamic states of the vessels of the base of the brain.

(2) The substances to constrict the wall of the cerebral vessels are contained in the fresh blood and it will be increased in the incubated blood. That is to say, the cerebral vasospasm is seemed to occur more frequently in few days after the subarachnoid hemorrhage than immediately after that.

(3) It was considered that not only some com-ponents in blood but other unknown facters are concerned with the cerebral vasospasm. (4) Basilar artery was seemed to be the vessel to occur the vasospasm most frequently in the cere-bral vessels at least in the cat and the dog. (5) Cerebral vasospasm was seemed to be apt to occur in the cat rather than the dog.


Copyright © 1970, 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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