Kakou M, Destrieux C, Velut S
Laboratoire d'Anatomie, Faculté de Médecine, Université François Rabelais, Tours, France.
J Neurosurg. 2000 Oct;93(4):667-75. doi: 10.3171/jns.2000.93.4.0667.
The pericallosal arterial complex supplies the callosal and pericallosal regions, as well as the anterior two thirds of the medial and superomedial aspects of both hemispheres. It is composed of the pericallosal artery (that is, the segment of the anterior cerebral artery located distal to the anterior communicating artery [ACoA]) and the median callosal artery (or third pericallosal artery), which originates from the ACoA. This system was studied in 46 specimens (23 human cadaver heads) injected with colored latex.
After being injected with colored latex, embalmed, and bleached, the specimens were studied with the aid of optic magnification. The pericallosal artery was found to be divided into four segments (A2-A5 in the proximodistal direction). After giving rise to central, callosal, and cortical branches, it terminated near the splenium of the corpus callosum as the posterior pericallosal artery, or on the precuneus as the inferomedial parietal artery.
The authors propose a logical classification of the different variations in the pericallosal arterial complex based on embryological development. This complex can be considered a hemodynamic solution to an abnormal regression of one of its parts, which is balanced by the development of supplemental channels from other parts.
胼周动脉复合体供应胼胝体和胼周区域，以及两侧大脑半球内侧面和上内侧面的前三分之二。它由胼周动脉（即大脑前动脉位于前交通动脉[ACoA]远端的节段）和正中胼胝体动脉（或第三胼周动脉）组成，后者起源于ACoA。在46个注射了彩色乳胶的标本（23个人类尸头）中对该系统进行了研究。
在注射彩色乳胶、防腐处理和漂白后，借助光学放大对标本进行研究。发现胼周动脉分为四段（从近端到远端为A2 - A5）。发出中央支、胼胝体支和皮质支后，它在胼胝体压部附近终止为胼周后动脉，或在楔前叶上终止为顶叶内下动脉。
作者基于胚胎发育对胼周动脉复合体的不同变异提出了一种合理的分类。该复合体可被视为其某一部分异常退化的一种血流动力学解决方案，这种退化由其他部分补充通道的发育来平衡。
