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Abstract #1637

Motion robust two-minute free-breathing hepatobiliary phase imaging of the liver using a golden-angle ordered conical acquisition with extended readout.

Ryan L Brunsing1, Joseph Y Cheng1, David Zeng2, Vipul R Sheth1, Signy Holmes1, and Shreyas S Vasanawala1

1Department of Radiology, Stanford University, Palo Alto, CA, United States, 2Electrical Engineering, Stanford Univresity, Palo Alto, CA, United States

Imaging of the liver can be compromised by motion artifacts which are especially problematic in patients with breathing difficulties. Non-Cartesian k-space sampling trajectories are motion robust and have shown promise in hepatobiliary-phase (HBP) imaging of the liver. Here we demonstrate that free-breathing HBP imaging can be obtained using a 3D cones k-space trajectory with golden angle ordering and extended readout (T1gER). The protocol shows similar performance to a conventional respiratory navigated sequence and can be acquired in less than half the time.

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