PMID- 37284863 OWN - NLM STAT- MEDLINE DCOM- 20231027 LR - 20231209 IS - 1432-1084 (Electronic) IS - 0938-7994 (Linking) VI - 33 IP - 11 DP - 2023 Nov TI - Intracranial aneurysms treated with stent-assisted coil embolization: evaluation with four-dimensional ultrashort-TE MR angiography. PG - 7923-7933 LID - 10.1007/s00330-023-09755-1 [doi] AB - OBJECTIVES: As a novel follow-up method for intracranial aneurysms treated with stent-assisted coil embolization (SACE), we developed four-dimensional magnetic resonance angiography (MRA) with minimized acoustic noise utilizing ultrashort-echo time (4D mUTE-MRA). We aimed to assess whether 4D mUTE-MRA is useful for the evaluation of intracranial aneurysms treated with SACE. METHODS: This study included 31 consecutive patients with intracranial aneurysm treated with SACE who underwent 4D mUTE-MRA at 3 T and digital subtraction angiography (DSA). For 4D mUTE-MRA, five dynamic MRA images with a spatial resolution of 0.5 x 0.5 x 0.5 mm(3) were obtained every 200 ms. Two readers independently reviewed the 4D mUTE-MRA images to evaluate the aneurysm occlusion status (total occlusion, residual neck, and residual aneurysm) and the flow in the stent using a 4-point scale (from 1 [not visible] to 4 [excellent]). The interobserver and intermodality agreement was assessed using kappa statistics. RESULTS: On DSA images, 10 aneurysms were classified as total occlusion, 14 as residual neck, and 7 as residual aneurysm. In terms of aneurysm occlusion status, the intermodality and interobserver agreement was excellent (kappa = 0.92 and kappa = 0.96, respectively). For the flow in the stents on 4D mUTE-MRA, the mean score was significantly higher for single stents than multiple stents (p < .001) and for open-cell type stents than closed-cell type (p < .01). CONCLUSIONS: 4D mUTE-MRA is a useful tool with a high spatial and temporal resolution for the evaluation of intracranial aneurysms treated with SACE. KEY POINTS: * In the evaluation of intracranial aneurysms treated with SACE on 4D mUTE-MRA and DSA, the intermodality and interobserver agreement in aneurysm occlusion status was excellent. * 4D mUTE-MRA shows good to excellent visualization of flow in the stents, especially for cases treated with a single or open-cell stent. * 4D mUTE-MRA can provide hemodynamic information related to embolized aneurysms and the distal arteries to stented parent arteries. CI - (c) 2023. The Author(s), under exclusive licence to European Society of Radiology. FAU - Uetani, Hiroyuki AU - Uetani H AUID- ORCID: 0000-0002-0547-1210 AD - Departments of Diagnostic Radiology, Faculty of Life Sciences, Kumamoto University, 1-1-1, Honjo, Chuou-ku, Kumamoto, Japan. hama-moto@hotmail.co.jp. FAU - Kitajima, Mika AU - Kitajima M AD - Departments of Diagnostic Radiology, Faculty of Life Sciences, Kumamoto University, 1-1-1, Honjo, Chuou-ku, Kumamoto, Japan. AD - Department of Medical Image Sciences, Faculty of Life Sciences, Kumamoto University, 1-1-1, Honjo, Chuou-ku, Kumamoto, Japan. FAU - Ohmori, Yuki AU - Ohmori Y AD - Department of Neurosurgery, Faculty of Life Sciences, Kumamoto University, 1-1-1, Honjo, Chuou-ku, Kumamoto, Japan. FAU - Morita, Kosuke AU - Morita K AD - Central Radiology Section, Kumamoto University Hospital, 1-1-1, Honjo, Chuou-ku, Kumamoto, Japan. FAU - Yamashita, Yuichi AU - Yamashita Y AD - Canon Medical Systems Corporation, MRI Sales Department, Sales Engineer Group, 70-1, Yanagi-cho, Saiwai-ku, Kawasaki, Kanagawa, 212-0015, Japan. FAU - Kaku, Yasuyuki AU - Kaku Y AD - Department of Neurosurgery, Faculty of Life Sciences, Kumamoto University, 1-1-1, Honjo, Chuou-ku, Kumamoto, Japan. FAU - Nakaura, Takeshi AU - Nakaura T AD - Departments of Diagnostic Radiology, Faculty of Life Sciences, Kumamoto University, 1-1-1, Honjo, Chuou-ku, Kumamoto, Japan. FAU - Sasao, Akira AU - Sasao A AD - Departments of Diagnostic Radiology, Faculty of Life Sciences, Kumamoto University, 1-1-1, Honjo, Chuou-ku, Kumamoto, Japan. AD - Joint Research Course of Imaging Dynamics Applied Medicine, Faculty of Life Sciences, Kumamoto University, 1-1-1, Honjo, Chuou-ku, Kumamoto, Japan. FAU - Sasaki, Goh AU - Sasaki G AD - Departments of Diagnostic Radiology, Faculty of Life Sciences, Kumamoto University, 1-1-1, Honjo, Chuou-ku, Kumamoto, Japan. FAU - Ishiuchi, Soichiro AU - Ishiuchi S AD - Departments of Diagnostic Radiology, Faculty of Life Sciences, Kumamoto University, 1-1-1, Honjo, Chuou-ku, Kumamoto, Japan. FAU - Mukasa, Akitake AU - Mukasa A AD - Department of Neurosurgery, Faculty of Life Sciences, Kumamoto University, 1-1-1, Honjo, Chuou-ku, Kumamoto, Japan. FAU - Hirai, Toshinori AU - Hirai T AD - Departments of Diagnostic Radiology, Faculty of Life Sciences, Kumamoto University, 1-1-1, Honjo, Chuou-ku, Kumamoto, Japan. LA - eng PT - Journal Article DEP - 20230607 PL - Germany TA - Eur Radiol JT - European radiology JID - 9114774 SB - IM MH - Humans MH - *Intracranial Aneurysm/diagnostic imaging/therapy MH - Follow-Up Studies MH - *Embolization, Therapeutic/methods MH - Magnetic Resonance Angiography/methods MH - Stents MH - Angiography, Digital Subtraction/methods MH - Treatment Outcome OTO - NOTNLM OT - Intracranial aneurysm OT - Magnetic resonance angiography OT - Magnetic resonance imaging OT - Stents EDAT- 2023/06/07 13:10 MHDA- 2023/10/27 06:42 CRDT- 2023/06/07 11:04 PHST- 2022/10/31 00:00 [received] PHST- 2023/03/10 00:00 [accepted] PHST- 2023/02/23 00:00 [revised] PHST- 2023/10/27 06:42 [medline] PHST- 2023/06/07 13:10 [pubmed] PHST- 2023/06/07 11:04 [entrez] AID - 10.1007/s00330-023-09755-1 [pii] AID - 10.1007/s00330-023-09755-1 [doi] PST - ppublish SO - Eur Radiol. 2023 Nov;33(11):7923-7933. doi: 10.1007/s00330-023-09755-1. Epub 2023 Jun 7.