Purpose: To obtain a better understanding of the anatomy of the siphon of the internal carotid artery, providing a guidance for catheterization.

• 目的:对35具成人头颅颈内动脉虹吸部进行血管走行方向、成角、开口方位的观察和分析,为指导颅内动脉插管提供解剖学依据。