Marinkovic S, Gibo H, Milisavljevic M, Cetkovic M
Institute of Anatomy, University School of Medicine, Belgrade, Yugoslavia.
Clin Anat. 2001 May;14(3):190-5. doi: 10.1002/ca.1032.
The authors examined the lenticulostriate (perforating) arteries in the vascular casts of 48 middle cerebral arteries (MCA), as well as in the MRI or CT scans of 32 patients with cerebral infarcts in the MCA territory. The lenticulostriate arteries ranged between two and 12 in number, and from 80 microm to 1,400 microm in size. They originated from the main trunk, terminal trunks, bifurcation site, and/or leptomeningeal branches of the MCA, either separately or from common trunks (70.8%). The extreme variations of the supplying region of the perforators were noted in seven anatomic specimens. In addition to the basal ganglia, the genu, and the anterior limb of the internal capsule, the lenticulostriate arteries seemed to supply only the rostral portion of the superior part of the posterior limb of the capsule. The patients presented with occlusion of all the lenticulostriate arteries, individual arteries, or only their twigs. Complete occlusion of these arteries resulted in a huge central hemispheric infarct. Occlusion of an individual artery most often caused a large ganglionic-capsular infarct. The authors concluded that the lacunar infarcts usually follow occlusion of a terminal or a side branch of the lenticulostriate arteries.
作者检查了48例大脑中动脉（MCA）血管铸型中的豆纹（穿支）动脉，以及32例MCA供血区脑梗死患者的MRI或CT扫描图像。豆纹动脉数量在2至12条之间，直径为80微米至1400微米。它们起源于MCA的主干、终末干、分叉处和/或软脑膜分支，可单独起源或来自共同干（70.8%）。在7个解剖标本中观察到穿支供血区域的极端变异情况。除基底节、内囊膝部和前肢外，豆纹动脉似乎仅供应内囊后肢上部的 Rostral 部分。患者出现所有豆纹动脉、单支动脉或仅其分支闭塞的情况。这些动脉完全闭塞会导致巨大的中央半球梗死。单支动脉闭塞最常引起大的神经节 - 囊梗死。作者得出结论，腔隙性梗死通常继发于豆纹动脉终末支或侧支闭塞。
