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Area of Supply on the Central Branches of the Basilar Artery and Its Branches. ---Clinico-anatomical Study on the Diagnosis and Treatment of Cerebrovascular Diseases---

基底动脉中央分支及其分支的供应区域。

基本信息

批准号：
62570651
负责人：
GIBO Hirohiko
金额：
$ 1.28万
依托单位：
Shinshu University School of Medicine
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1987
资助国家：
日本
起止时间：
1987 至 1988
项目状态：
已结题

项目摘要

In order to improve outcome of cerebrovascular diseases such as cerebral infarction and subarachnoid hemorrhage, it is important to have precise knowledge about topographical vascular anatomy around the basilar artery and its central branches. Twenty-six cadaveric brains (52 hemispheres) were used and these vessels were examined under operating microscope. Special attention was paid to the number, diameter, site of origin and termination of the central branches.1. The number of branches from the basilar artery was 19.5 on average with an average diameter of 0.40 mm. The basilar artery was divided into three equal segments (lower 1/3, middle 1/3, and upper 1/3). The number of branches was 4.7 in the lower 1/3, 7.7 in middle 1/3, and 7.0 in upper 1/3. The site of origin of branches was 58% from posterior aspect, 24% from postero-lateral, and 18% from lateral. The site of termination of branches in each segments was as follows: branches in the lower 1/3 terminated at the foramen cecum, la … More teral medullary sulcus, and pons; branches in the middle 1/3 terminated at the pons and trigeminal nerve; and branches in the upper 1/3 terminated at the pons, interpeduncular fossa, and superior cerebellar peduncle.2. The number of branches from the posterior communicating artery was 8.6 on average with an average diameter of 0.26 mm. The site of termination was 5.0 in the premamillary area, 1.9 in the posterior perforated substance, 1.7 in the rest. The branches from the anterior portion of the posterior communicating artery passed to the tuber cinereum, and the branches from posterior passed to the posterior perforated substance and interpeduncular fossa.3. The average number of branches arising from the proximal posterior cerebral artery (P-1) was 4.3 with the average diameter of 0.5 mm. We found on average 3.1 perforating and 1.2 circumflex branches. The perforating branches terminated at the interpeduncular portion of the midbrain and anterior portion of the cerebral peduncle, while the circumflex terminated at the quadrigeminal body and posterior portion of the cerebral peduncle. Among the central branches from the P-1, the perforating branches originated mainaly from the superior or posterior aspect of the P-1, while the circumflex originated mainly from its posterior or inferior aspect. Less

为了改善脑梗死和蛛网膜下腔出血等脑血管疾病的预后，准确了解基底动脉及其中央支周围血管的解剖结构非常重要。在手术显微镜下观察了26例（52个半球）尸体脑的血管。特别注意了中央分支的数量、直径、起源和终止的位置。基底动脉发出的分支数平均为19.5支，平均直径为0.40mm，分为下1/3、中1/3、上1/3三段。下1/3、中1/3和上1/3的分支数分别为4.7、7.7和7.0。分支起源于后方占58%，后外侧占24%，外侧占18%。各节段分支的终止部位为：下1/3的分支终止于盲肠孔，下1/3的分支终止于盲肠孔 ...更多信息结果：1.延髓外侧沟、脑桥有分支，中1/3分支止于脑桥和三叉神经，上1/3分支止于脑桥、脚间窝和上级小脑脚.后交通动脉发出的分支平均为8.6支，平均直径为0.26mm，终止于乳头体前区5.0支，后穿质区1.9支，其余1.7支。后交通动脉前部的分支走行于灰结节，后部的分支走行于后穿质和脚间窝.大脑后动脉（P-1）近端发出的分支平均为4.3支，平均直径为0.5 mm，平均有3.1支穿支和1.2支旋支。穿支止于中脑脚间部和大脑脚前部，旋支止于四叠体和大脑脚后部。P1中央支中，穿支主要起源于P1的上级或后方，旋支主要起源于P1的后方或下方。少