Matrix栓塞颅内动脉瘤的影像学随访

目的 通过随访方式确定Matrix弹簧圈栓塞颅内动脉瘤后影像学变化,评定Matrix防止颅内动脉瘤栓塞后再通的效果及可能的影响因素。方法 针对应用Matrix弹簧圈栓塞的48例颅内动脉瘤患者,在局麻下行脑血管造影,常规取正位、侧位和栓塞工作位。对比栓塞后即刻影像和随访影像。结果 48例患者共49枚动脉瘤接受脑血管造影随访,平均随访时间11．75个月。栓塞后即刻造影和复查造影：完全栓塞率分别为34．7％和53．1％,次全栓塞率分别为42．9％和24．5％。不全栓塞率分别为22．4％和22．4％。共14枚动脉瘤发生再通,再通率为28．5％,严重再通率14．3％。结论 Matrix栓塞颅内动脉瘤后影像比较稳定,再通率不高于GDC等裸金属圈栓塞的动脉瘤。

Angiographic outcomes of cerebral aneurysms embolized with Matrix coils

OBJECTIVE: To investigate the effect of Matrix coil in prevention of recanalization of intracranial aneurysm after embolization with Matrix coils. METHODS: Plan of follow-up was designed to make digital substraction angiographies for Forty-eight intracranial aneurysm patients with 49 aneurysm s, 22 males and 26 females, aged 52 (15 ~ 67), underwent embolization with Matrix coil and were followed up for 11.75 months on average. Digital substraction angiography was conducted immediately after the operation and during the follow-up. At least three projections, including anterior-posterior projection, lateral projection, and optimal working projection were adopted. The percentages of occlusion of the initial and the follow-up images were compared. RESULTS: DSA immediately after the opearion showed a complete occlusion rate of 34.7%, near complete rate of 42.9% and an incomplete rate of 22.4%. The follow-up DSA revealed that the complete occlusion rate was 53.1%, near complete rate was 24.5%, and incomplete rate was 22.4%. The overall recanalization rate was 28.5%, 22.2% for small aneurysms and 46.1% for large aneurysms. The major recanalization rate was 14.3% and the improvement rate was 24.5%. The recanalization rate was 11.8% for total occlusion, 33.3% for near complete occlusion, and 45.5% for incomplete. CONCLUSION: The long-term angiographic outcome of intracranial aneurysms after embolization with Matrix coils is stable. The recanalization rate is acceptable and is not better than that of GDCs.