国人脑动脉系统的研究 Ⅱ.纹状体、丘脑及内囊的动脉

THE ARTERIES OF THE CORPUS STRIATUM,THALAMUS AND INTERNAL CAPSULE

前言国人脑动脉系统的研究,作者曾经完成了第一部分,大脑外部的动脉[1]。本工作是前一工作的继续——纹状体、丘脑及内囊的动脉供给,是从脑底部各大脑动脉发出的穿动脉及脉络膜动脉来的。这些动脉过去的研究,主要是用注射方法观察各群穿动脉的分布范围[2-3]和对各穿动脉发出部位、支数、排列形式及穿入部位的描述[4-6]。

The arteries which supply the corpus striatum,thalamus and internal capsule were studied on 40 Chinese brains by dissection under stereoscopic microscope,angiography,in-jection with albumin-vermilion followed by clearing and corrosion method in order to ob-serve their points of origin,positions of perforation and intracerebral courses.The fol-lowing results were obtained.1.Perforating arteries which arose from the anterior cerebral artery could be divided into 2 groups.Those,which arose near the level of the anterior communicating artery,usually one in number,consisted of 90.00±3.66%of the cases;and those,which arose from the proximal portion of the anterior cerebral artery,usually two in number,consisted of 83.75±4.02%of the cases.2.Perforating arteries of the middle cerebral artery consisted of a medial and a lateral group.The lateral perforating arteries,1--4 in number,passed over the superficial portion of the putamen spreading out like a fan.The medial perforating arteries were only 1--2 in number.Both groups pierced the lenticular nuclleus and the internal cap-sule,supplying the body of the caudate nucleus.3.The striato-capsular arteries arose from the anterior choroidal artery(97.50±1.75%)and only very small part of them arose from the internal carotid artery.4.The tubero-thalamic artery:95.00±2.44%of the cases studied,originated from the posterior communicating artery;2.50±1.76%from the internal carotid artery;1.25±1.26%from the anterior choroidal artery and 1.25±1.26%from the anterior cerebral artery.5.The posterior cerebral artery gave off thalamoperforating arteries,thalamogeni-culate arteries and the medial and lateral posterior choroidal arteries.The origin,position of perforation and the intracerebal course of all arteries men-tioned above were studied and diagramed.6.All of the arteries supplying corpus striatum,thalamus and internal capsule of both sides seemed to be arranged in the form of a balloon with larger lateral walls.