Abstract #2660

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

Shohei Fujita¹, Akifumi Hagiwara^1,2, Masaaki Hori¹, Otsuka Yujiro^1,3, Fukunaga Issei¹, Nao Takano¹, Christina Andica¹, Tomoko Maekawa^1,2, Ryusuke Irie^1,2, 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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