PT - JOURNAL ARTICLE AU - Takano, N. AU - Suzuki, M. AU - Irie, R. AU - Yamamoto, M. AU - Teranishi, K. AU - Yatomi, K. AU - Hamasaki, N. AU - Kumamaru, K.K. AU - Hori, M. AU - Oishi, H. AU - Aoki, S. TI - Non-Contrast-Enhanced Silent Scan MR Angiography of Intracranial Anterior Circulation Aneurysms Treated with a Low-Profile Visualized Intraluminal Support Device AID - 10.3174/ajnr.A5223 DP - 2017 Aug 01 TA - American Journal of Neuroradiology PG - 1610--1616 VI - 38 IP - 8 4099 - http://www.ajnr.org/content/38/8/1610.short 4100 - http://www.ajnr.org/content/38/8/1610.full SO - Am. J. Neuroradiol.2017 Aug 01; 38 AB - BACKGROUND AND PURPOSE: The Low-Profile Visualized Intraluminal Support Device comprises a small-cell nitinol structure and a single-wire braided stent that provides greater metal coverage than previously reported intracranial stents, as well as assumed strong susceptibility artifacts. This study aimed to assess the benefits of non-contrast-enhanced MRA by using a Silent Scan (Silent MRA) for intracranial anterior circulation aneurysms treated with Low-Profile Visualized Intraluminal Support Device stents.MATERIALS AND METHODS: Thirty-one aneurysms treated with Low-Profile Visualized Intraluminal Support Device stents were assessed by using Silent MRA, 3D TOF-MRA, and x-ray DSA. The quality of MRA visualization of the reconstructed artery was graded on a 4-point scale from 1 (not visible) to 4 (excellent). Aneurysm occlusion status was evaluated by using a 2-grade scale (total occlusion/remnant [neck or aneurysm]). Weighted κ statistics were used to evaluate interobserver and intermodality agreement.RESULTS: The mean scores ± SDs for Silent MRA and 3D TOF-MRA were 3.16 ± 0.79 and 1.48 ± 0.67 (P < .05), respectively, with substantial interobserver agreement (κ = 0.66). The aneurysm occlusion rates of the 2-grade scale (total occlusion/remnant [neck or aneurysm]) were 69%/31% for DSA, 65%/35% for Silent MRA, and 92%/8% for 3D TOF-MRA, respectively. The intermodality agreements were 0.88 and 0.30 for DSA/Silent MRA and DSA/3D TOF-MRA, respectively.CONCLUSIONS: Silent MRA seems to be useful for visualizing intracranial anterior circulation aneurysms treated with Low-Profile Visualized Intraluminal Support Device stents.CEcontrast-enhancedLVIS Jr.Low-Profile Visualized Intraluminal Support DeviceUTEultrashort TE