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Abstract #2660

Synthetic MR Angiography: A Feasibility Study of MR Angiography based on 3D Synthetic MRI

Shohei Fujita1, Akifumi Hagiwara1,2, Masaaki Hori1, Otsuka Yujiro1,3, Fukunaga Issei1, Nao Takano1, Christina Andica1, Tomoko Maekawa1,2, Ryusuke Irie1,2, Koji Kamagata1, Akihiko Wada1, Michimasa Suzuki1, and Shigeki Aoki1

1Department of Radiology, Juntendo University, Tokyo, Japan, 2Department of Radiology, The University of Tokyo, Tokyo, Japan, 3Milliman Inc., Tokyo, Japan

Quantitative synthetic MRI allows creation of various contrast-weighted image that can be used in clinical settings from a single acquisition. However, clinically widely used MRA was unable to obtain using synthetic MRI. We demonstrate an arithmetic approach to produce MRA-like images from the 5 raw images of 3D-QALAS. Qualitative and quantitative evaluations were performed to compare image qualities of synthetic MRA with TOF-MRA. Proximal segments of intracranial arteries were clearly visualized on synthetic MRA, with comparable quality to that of TOF-MRA. Synthetic MRA may function as a screening tool to detect lesions of major intracranial arteries, without additional scanning time.

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