Gibo H, Lenkey C, Rhoton A L
J Neurosurg. 1981 Oct;55(4):560-74. doi: 10.3171/jns.1981.55.4.0560.
The microsurgical anatomy of the supraclinoid portion of the internal carotid artery (ICA) was studied in 50 adult cadaver cerebral hemispheres using X 3 to X 40 magnification. The ICA was divided into four parts: the C1 or cervical portion; the C2 or petrous portion; the C3 or cavernous portion; and the C4 or supraclinoid portion. The C4 portion was divided into three segments based on the origin of its major branches: the ophthalmic segment extended from the origin of the ophthalmic artery to the origin of the posterior communicating artery (PCoA); the communicating segment extended from the origin of the PCoA to the origin of the anterior choroidal artery (AChA); and the choroidal segment extended from the origin of the AChA to the bifurcation of the carotid artery. Each segment gave off a series of perforating branches with a relatively constant site of termination. The perforating branches arising from the ophthalmic segment passed to the optic nerve and chiasm, infundibulum, and the floor of the third ventricle. The perforating branches arising from the communicating segment passed to the optic tract and the floor of the third ventricle. The perforating branches arises from the choroidal segment passed upward and entered the brain through the anterior perforated substance. The anatomy of the ophthalmic, posterior communicating, anterior choroidal, and superior hypophyseal branches of the C4 portion was also examined.
在50个成人尸体脑半球上，使用3倍至40倍放大倍数对颈内动脉（ICA）鞍上部分的显微外科解剖结构进行了研究。颈内动脉分为四个部分：C1或颈部；C2或岩部；C3或海绵窦部；以及C4或鞍上部分。C4部分根据其主要分支的起源分为三个节段：眼动脉段从眼动脉起源处延伸至后交通动脉（PCoA）起源处；交通段从PCoA起源处延伸至脉络膜前动脉（AChA）起源处；脉络膜段从AChA起源处延伸至颈动脉分叉处。每个节段都发出一系列具有相对固定终止部位的穿支。眼动脉段发出的穿支通向视神经和视交叉、漏斗以及第三脑室底部。交通段发出的穿支通向视束和第三脑室底部。脉络膜段发出的穿支向上并通过前穿质进入脑内。还检查了C4部分的眼动脉、后交通动脉、脉络膜前动脉和垂体上动脉分支的解剖结构。
