Abstract #1764

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

Haruyuki Fukuchi^1,2, 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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