Last Updated
：2025/11/28
circle of Willis
Noun
Japanese Meaning
脳の底部に形成される動脈の環状構造。大脳動脈および交通枝によって構成され、動脈瘤が発生しやすい部位となる（ウィリス輪）。
（ plural ）
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(anatomy) A circle of arteries at the base of the brain that is formed by the cerebral and communicating arteries and is a site of aneurysms.
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circle of Willis
Radiologists carefully examined the circle of Willis for signs of aneurysm during the MRI review.
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Radiologists carefully examined the circle of Willis for signs of aneurysm during the MRI review.
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