对比增强磁共振血管造影术在使用Enterprise支架对脑动脉瘤进行弹簧圈栓塞术后随访中的应用价值
Usefulness of contrast-enhanced magnetic resonance angiography for follow-up of coil embolization with the enterprise stent for cerebral aneurysms.
作者信息
Takayama Katsutoshi, Taoka Toshiaki, Nakagawa Hiroyuki, Myouchin Kaoru, Wada Takeshi, Sakamoto Masahiko, Fukusumi Akio, Iwasaki Satoru, Kurokawa Shinichiro, Kichikawa Kimihiko
机构信息
Department of Radiology and Interventional Neuroradiology, Ishinkai Yao General Hospital, Osaka, Japan.
出版信息
J Comput Assist Tomogr. 2011 Sep-Oct;35(5):568-72. doi: 10.1097/RCT.0b013e31822bd498.
OBJECTIVE
The aim of this study was to determine the feasibility and usefulness of contrast-enhanced magnetic resonance angiography (CE-MRA) and 3-dimensional (3D) time-of-flight (TOF) MRA for follow-up of intracranial aneurysms treated using the Enterprise stent.
METHODS
Five aneurysm cases using the Enterprise stent were prospectively analyzed and were followed up with CE-MRA, 3D TOF MRA, and digital subtraction angiography (DSA). Depictions of parent artery lumen and the aneurysm neck with 3D TOF MRA and CE-MRA were compared with those of DSA.
RESULTS
In all cases, on 3D TOF MRA, it was difficult to evaluate the parent artery lumen and aneurysm neck owing to the significant artifacts from the stent. Contrast-enhanced MRA sufficiently demonstrated parent artery lumen and aneurysm neck distinctly and as clear as DSA did in all cases.
CONCLUSIONS
For follow-up after coiling with an Enterprise stent, CE-MRA may be necessary to avoid susceptibility artifacts caused by the stent.
目的
本研究旨在确定对比增强磁共振血管造影（CE-MRA）和三维（3D）时间飞跃（TOF）MRA用于随访使用Enterprise支架治疗的颅内动脉瘤的可行性和实用性。
方法
前瞻性分析5例使用Enterprise支架的动脉瘤病例，并采用CE-MRA、3D TOF MRA和数字减影血管造影（DSA）进行随访。将3D TOF MRA和CE-MRA对载瘤动脉管腔和动脉瘤颈的显示与DSA的显示进行比较。
结果
在所有病例中，3D TOF MRA上，由于支架产生的明显伪影，难以评估载瘤动脉管腔和动脉瘤颈。对比增强MRA在所有病例中均能充分清晰地显示载瘤动脉管腔和动脉瘤颈，与DSA显示效果一样清晰。
结论
对于使用Enterprise支架栓塞后的随访，可能需要CE-MRA以避免由支架引起的磁化率伪影。
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