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Abstract #2684

Non-Contrast Gate-Free Aortic MR Angiography with Robust Fat Suppression

Nobuyuki Toyonari1, Masami Yoneyama2, Seiichiro Noda1, Yukari Horino1, and Kazuhiro Katahira1

1Kumamoto Chuo Hospital, Kumamoto, Japan, 2Philips Electronics Japan, Tokyo, Japan

Non-contrast MR angiography (MRA) is a promising method to diagnose and follow-up of vascular diseases such as dissecting aortic aneurysm. Conventionally, 3D gated balanced steady-state free precession (bSSFP) is used for the aorta, but it has several limitations. To overcome bSSFP’s limitations , we propose a new technique based on gradient echo DIXON sequence with flow-independent relaxation-enhanced non-contrast MRA technique (Relaxation-Enhanced Angiography without Contrast and Triggering: REACT). We showed that REACT could provide more robust and stable MRA without any artifacts and failed fat suppression compared with conventional bSSFP.

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