Catheterization at both ICA was used to monitor the patency of parent arteries for patients with well developed A1 segment of both ACAs.

• 对双侧A1正常者应用双侧颈动脉置管技术监测栓塞术中载瘤动脉通畅情况 ,对瘤颈累及双侧A2者采用微导管微导丝辅助技术保持载瘤动脉通畅。