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作者报告5例连接颈内动脉与小脑前下动脉的永存三义动脉变异(PTAV)。5例均为女性,颈内动脉造影见从颈内动脉分出一枝小动脉向后方走行,分布于小脑下面及小脑水平裂。Haughton认为变异是原始三叉动脉的残迹与纵行神经动脉不完全愈合的结果。原始的三叉动脉通过一侧不愈合的纵行神经动脉与小脑上动脉、小脑前下动脉及小
The authors report 5 cases of permanent Sanyi Artery Variation (PTAV) connecting the internal carotid artery and the anterior inferior cerebellar artery. 5 cases were female, internal carotid artery angiography see from the internal carotid artery branch to the rear of a branch, distributed in the cerebellum and cerebellar horizontal cleft. Haughton that mutation is the remnants of the original trigeminal artery and longitudinal nerve arteries incomplete healing results. The original trigeminal artery through the unilateral longitudinal nerve artery and the superior cerebellar artery, anterior inferior cerebellar artery and small