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详细观测了３０例充分暴露椎动脉上段的标本该段动脉的形态特点、毗邻关系及其在被动运动状态下的表现，从中探讨上述解剖特点与椎－基底动脉供血不足的关系及某些手术入路的问题
The morphology, adjacent relationship and the performance of the artery in the condition of passive movement of 30 fully exposed vertebral artery specimens were observed in detail. The relationship between these anatomical features and insufficiency of vertebrobasilar artery Road problems