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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