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Abstract #1764

Evaluation of 4D ultrashort TE MR Angiography using Variable Inversion Time.

Haruyuki Fukuchi1,2, Nao Takano3, Yutaka Ikenouchi2, Michimasa Suzuki2, Osamu Abe1, and Shigeki Aoki2
1Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan, 2Department of Radiology, Juntendo University Graduate School of Medicine, Tokyo, Japan, 3Department of Radiology, Juntendo University Hospital, Tokyo, Japan

We developed a novel method, Variable TI, to improve the visibility of ASL based UTE 4D-MRA. In the phantom study and the volunteer study, the Variable TI UTE 4D-MRA offered a higher signal intensity and improved visualization of arteries in late phase compared to the conventional method. The Variable TI technique can improve clinical usability of 4D-MRA because this technique not only offered better visibility of arteries but also realized the data efficacy and reduced reconstruction time.

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