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Abstract #0695

Highly accelerated FLEXA 3DTOF MR Angiography with iterative deep learning reconstruction

Naoyuki Takei1, Rafi Brada2, Sangtae Ahn3, Graeme McKinnon4, Xucheng Zhu5, Atsushi Nozaki1, Shigeo Okuda6, Masahiro Jinzaki6, and Tetsuya Wakayama1
1GE Healthcare, Tokyo, Japan, 2GE Research, Herzliya, Israel, 3GE Research, Niskayuna, NY, United States, 4GE Healthcare, Waukesha, WI, United States, 5GE Healthcare, Menlo Park, CA, United States, 6Keio University School of Medicine, Tokyo, Japan

Synopsis

Keywords: Vessels, Machine Learning/Artificial IntelligenceRapid non-contrast MRA of supra-aortic arteries is necessary to select proper patient for endovascular therapy (EVT) as EVT has become the predominant therapy of acute ischemic stroke. However, conventional 3DTOF has long scan time of 6-7 minutes to cover the entire carotid artery. A highly accelerated MRA with iterative deep learning reconstruction was developed to provide the wide scan coverage and less motion sensitivity within 1 minute. We evaluated the technique with prospectively and retrospectively undersampled data demonstrating high-quality vessel visualization and improved acquisition efficiency at 8x acceleration.

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Keywords