Usefulness of Contrast-Enhanced Magnetic Resonance Angiography for Follow-Up of Coil Embolization With the Enterprise Stent for Cerebral Aneurysms

• DOI: 10.1097/rct.0b013e31822bd498
• Publication Date: 2011-10-04T19:54:37Z
• Authors: Katsutoshi Takayama; Toshiaki Taoka; Hiroyuki Nakagawa; Kaoru Myouchin; Takeshi Wada; Masahiko Sakamoto; Akio Fukusumi; Satoru Iwasaki; Shinichiro Kurokawa; Kimihiko Kichikawa
• Keywords: Angiography, Digital Subtraction; Contrast Media; Intracranial Aneurysm; Middle Aged; Embolization, Therapeutic; Cerebral Angiography; Iopamidol; 03 medical and health sciences; Imaging, Three-Dimensional; Treatment Outcome; 0302 clinical medicine; Feasibility Studies; Humans; Female; Stents; Prospective Studies; Artifacts; Magnetic Resonance Angiography; Aged

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.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.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.For follow-up after coiling with an Enterprise stent, CE-MRA may be necessary to avoid susceptibility artifacts caused by the stent.