脑底动脉环

脑底动脉环应用解剖与DSA对照分析

Practical Anatomy of Willis ' Circle : A Comparison with DSA Manifestations

大鼠的脑底动脉环闭锁型的出现率是9778%，组成环的两侧血管等粗，对称者是8000%。

The rate of closed pattern of Willis circle was 97 78 % and the symmetry of the cerebral bilateral vessels was 80 % for the rat arterial circle .

成年大鼠脑底动脉环含NPY、VIP、SP和CGRP神经的分布

Distribution of npy - , vip - , sp - and CGRP-immunoreactive nerves in the rat cerebral arteries

栓塞前患侧ICA流速增加，MCA、ACA流速降低（1例ACA信号翻转），压闭患侧颈内动脉后，所有ACA血流信号翻转，PCA血流增快，提示脑底动脉环功能良好。

The reversed ACA flow signal and the increased PCA velocity induced by pressing the carotid artery indicated good function of the basal artery circle .

动眼神经滋养动脉主要来自脑底动脉环的后内侧动脉组。

The nutrient arteries of oculomotor nerve mainly originate from the branches of the medial posterior group of the arterial circle in the base of brain .

目的：探讨脑底动脉环各组成血管的起源、分支、走行方向及其变异，为神经介入性插管提供解剖学依据。

Objective : To explore the origin , branch , course and variation of the arteries on the base of the brain and provide the anatomical basis for interventional neuroradiologic procedures .

测量了组成脑底动脉环有关动脉的口径。由于后交通动脉足够粗大，只有中断左、右颈总动脉和左、右椎动脉，才能造成全脑缺血。

The calibre of anterior and posterior communicating arteries are sufficiently enough , therefore if one wants to make a whole cerebral ischemia of tree shrew one has to ligate all the four arteries , i. e. , the right and left common carotid and vertebral arteries .

方法：对60例福尔马林固定的头颅标本，获取Willis环并充分暴露脑底部血管后，观测脑底动脉环各组成血管的起源、分支、走向、变异及其长度和外径。

Methods : 60 cases chinese adult cadaveric brain were well prepared for the sake of surveying the origin , branch , course and variation of circle of willis and measuring its length , external diameter .