Microanatomy of the pericallosal arterial complex
Microanatomy of the pericallosal arterial complex
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DOI：
10.3171/jns.2000.93.4.0667
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发表时间：
2000-10-01
影响因子：
4.1
通讯作者：
Velut, S
中科院分区：
文献类型：
--
作者：
Kakou, M;Destrieux, C;Velut, S
Object.胼胝体周围动脉复合体供应胼胝体和胼胝体周围区域，以及两个半球的内侧和内侧上的前三分之二。它由胼胝体周围动脉（即位于前交通动脉[ACoA]远端的大脑前动脉段）和起源于ACoA的胼胝体正中动脉（或第三胼胝体周围动脉）组成。在46例（23例）彩色乳胶灌注的人尸头标本上对该系统进行了研究。标本经彩色乳胶灌注、防腐、漂白后，在光学放大镜下观察，发现胼胝体周围动脉分为A、A、B、A、A、在发出中央支、胼胝体支和皮质支后，终止于胼胝体压部附近作为胼胝体周围后动脉，或终止于楔前叶作为顶内下动脉。作者提出了一种基于胚胎发育的胼胝体周围动脉复合体不同变异的逻辑分类。该复合体可以被认为是其一个部分的异常回归的血流动力学解决方案，其通过来自其他部分的补充通道的发展来平衡。
Object. 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.Methods. 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 (A,A, 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.Conclusions. 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.