Hemodynamic analysis of endoleaks after endovascular abdominal aortic aneurysm repair by using 4-dimensional flow-sensitive magnetic resonance imaging 8

• Material Type: 博士論文
• ISSN: 1346-9843
• Title: Hemodynamic analysis of endoleaks after endovascular abdominal aortic aneurysm repair by using 4-dimensional flow-sensitive magnetic resonance imaging
• Volume: 80 8
• Author/Editor: 美甘（阪田）, 麻裕
• Author Heading: 美甘（阪田）, 麻裕
• Publication Date: 2016-07-25
• Publication Date (W3CDTF): 2016-07-25
• Alternative Title: 4D Flow MRIを用いた腹部大動脈瘤に対するステントグラフト内挿術後のエンドリークに対する血行動態解析
• Periodical title: Circulation journal : official journal of the Japanese Circulation Society
• Degree grantor/type: 浜松医科大学
• Date Granted: 2018-10-19
• Date Granted (W3CDTF): 2018-10-19
• Dissertation Number: 乙第555号
• Degree Type: 博士（医学）
• Conferring No. (Dissertation): 乙第555号
• Text Language Code: eng
• Subject Heading: 4D-flow; Endoleaks; Hemodynamics; Magnetic resonance imaging; Stent-graft
• Target Audience: 一般
• Note (General): doctoral; 医学系研究科; Background: An endoleak is a common complication of endovascular abdominal aortic aneurysm repair (EVAR), and it can be associated with aneurysmal growth. This pilot study used 4-dimensional flow-sensitive magnetic resonance imaging (4D-flow) to assess the hemodynamics of different types of endoleaks (I-IV).Methods and Results: Magnetic resonance angiography, 4D-flow, and computed tomography angiography (CTA) were performed in 31 patients after nitinol-based stent-graft deployment. With 4D-flow, the 3D streamlines of endoleaks appear as integrated traces along the instantaneous velocity vector field that are color-coded according to the local velocity magnitude of the leak. The 4D-flow analysis identified endoleaks in 18 patients (58.1%), whereas CTA identified endoleaks in 13 patients (41.9%). The 4D-flow analysis created a characteristic image of each type of endoleak. Among patients with endoleaks, 4D-flow identified concomitant multiple endoleaks in 7 (39%) patients, and it further differentiated type II endoleaks from type IIa endoleaks (to-and-fro biphasic flow pattern from a branch vessel) and from type IIb endoleaks (monophasic flow pattern with a connection between the inflow and outflow branches).Conclusions: The 4D-flow analysis was more sensitive than CTA for detecting an endoleak, and it could subclassify type II endoleaks. In addition, 4D-flow differentiated between concomitant endoleak types in a single patient. (Circ J 2016; 80: 1715-1725)
• DOI: info:doi/10.1253/circj.CJ-16-0297; https://doi.org/info:doi/10.1253/circj.CJ-16-0297
• Persistent ID (NDL): info:ndljp/pid/11337735; https://dl.ndl.go.jp/pid/11337735
• Collection: 障害者向け資料
• Collection (Materials For Handicapped People:1): テキストデータ
• Collection (particular): 国立国会図書館デジタルコレクション > デジタル化資料 > 博士論文; https://dl.ndl.go.jp/collections/A00014
• Acquisition Basis: 博士論文（自動収集）
• Date Accepted (W3CDTF): 2019-08-03T12:23:27+09:00
• Date Created (W3CDTF): 2019-07-09
• Format (IMT): application/pdf
• Access Restrictions: 国立国会図書館内限定公開
• Service for the Digitized Contents Transmission Service: 図書館・個人送信対象外
• Availability of remote photoduplication service: 可
• Periodical Title (URI): http://hdl.handle.net/10271/00003567; https://hama-med.repo.nii.ac.jp/records/3427
• Data Provider (Database): 国立国会図書館 : 国立国会図書館デジタルコレクション; https://dl.ndl.go.jp

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