Establishment of the method to detect endoleaks after stentgrafting using unenhanced MRI

2015 Fiscal Year Final Research Report

• Project/Area Number: 24591864
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: General surgery
• Research Institution: University of Tsukuba
• Principal Investigator: Mori Kensaku 筑波大学, 医学医療系, 准教授 (80361343)
• Co-Investigator(Renkei-kenkyūsha): SAIDA Tsukasa 筑波大学, 医学医療系, 講師 (80719485) ; MINAMI Manabu 筑波大学, 医学医療系, 教授 (60309713) ; SATO Fujio 筑波大学, 医学医療系, 講師 (20375497) ; NASU Katsuhiro 筑波大学, 医学医療系, 講師 (30450571) ; OKAMOTO Yoshikazu 筑波大学, 医学医療系, 講師 (90420083) ; SHIIGAI Masanari 筑波大学, 附属病院, 病院講師 (90535056)
• Research Collaborator: YABE Hitoshi ; SHINDO Masayuki ; YAMADA Kouji ; TOKI Taketo
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: 大動脈瘤 / ステントグラフト / エンドリーク / 検出 / 非造影 / MRI

Outline of Final Research Achievements

The detection of endoleaks is important to prevent late aortic aneurysm rupture after endovascular aneurysm repair (EVAR). For this purpose, contrast-enhanced computed tomography (CE-CT) is most widely used; however we often encounter the cases, where CE-CTis contraindicated due to renal dysfunction.
To evaluate the feasibility of unenhanced MRI using motion-sensitized driven equilibrium (MSDE) prepared balanced turbo field echo (BTFE) sequences for the detection of endoleaks after EVAR, we performed a phantom study using a pulsatile flow generator and a clinical study with CE-CT as the reference standard. As a result, the MSDE prepared BTFE sequences were clinically feasible and provided high diagnostic performance.

Free Research Field

放射線診断・IVR