[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 subtraction 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 subtraction 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 operation 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.


CONCLUSIONS
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.
Zhao
Zhen-Wei
ZW
Department of Neurosurgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China.
Deng
Jian-Ping
JP
Gao
Guo-Dong
GD
D000293:Adolescent; D000328:Adult; D000368:Aged; D002533:Cerebral Angiography; D004621:Embolization, Therapeutic / Q000295:instrumentation / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging* / Q000628:therapy*; D008297:Male; D008875:Middle Aged