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Observation on Microsurgery of the Willis Circle by Combined Frontotemporal-Orbitozygomatic Approach
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- Author:
- No author available
- Journal Title:
- JOURNAL OF CHINESE PHYSICIAN
- Issue:
- 9
- DOI:
- 10.3760/cma.j.issn.1008-1372.2002.09.004
- Key Word:
- 眶颧额颞下入路;脑底动脉环;穿通支;显微解剖
Abstract： 目的对Willis动脉环及其穿支进行解剖观察与测量,为临床手术提供依据.方法在手术显微镜下对5例成人尸体头颅经眶颧额颞下入路对动脉环进行显微解剖研究.结果 Willis动脉环由前交通动脉、左右大脑前动脉A1段、左右颈内动脉、左右后交通动脉及左右大脑后动脉内侧段组成.Willis动脉环变异多,尤其以大脑前动脉A1段明显,且左侧A1外径大于右侧A1外径.脑底动脉环上各部均有穿支发出,一般从起源动脉发出后走向内上方分布到垂体柄、视束、视交叉、丘脑、下丘脑、基底节和内囊等区域供血.结论熟悉Willis动脉环的显微解剖,保护好其穿支是获得良好的手术效果的关键.
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