颅内动脉瘤常发生于青壮年年龄阶段的人群 ,其破裂病死率达 2 0 %～ 30 %。目前颅内动脉瘤的治疗主要有外科手术夹闭及血管内栓塞治疗 ,但对于颈内动脉和椎基动脉主干等特殊部位的动脉瘤 ,外科手术十分困难 ,疗效不令人满意。Iwamoto等[1] 发现经外科手术夹闭的动脉瘤仍有 4 % Intracranial aneurysms often occur in adolescents in the age group, the rate of rupture of 20% to 30%. Currently the treatment of intracranial aneurysms are mainly surgical clipping and endovascular embolization, but for the internal carotid artery and vertebral artery and other special parts of the aneurysm, surgery is very difficult, the effect is not satisfactory. Iwamoto et al [1] found that the number of aneurysms that were surgically occluded was still 4%