Abstract #2471

Motion-resistant XD-GRASP for free-breathing liver MRI: qualitative comparison with standard breath-hold hepatobiliary phase imaging

Nathanael Kim¹, Shannan Dickinson², Maggie Fun³, Ersin Bayram³, Li Feng⁴, Ricard Do², and Ricardo Otazo^1,2

¹Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY, United States, ²Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, United States, ³GE Healthcare, Waukesha, WI, United States, ⁴Biomedical Engineering and Imaging Institute and Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, United States

Breath-hold post contrast T1-weighted liver MRI is limited by the patient’s ability to cooperate with breathing instructions. Free-breathing radial imaging and compressed sensing-based motion-resolved image reconstruction (XD-GRASP) has been specifically developed to resolve motion artifacts over standard cartesian techniques. In this work, we apply XD-GRASP to enable free-breathing MRI in the hepatobiliary liver phase, a clinically relevant problem. We demonstrate that the image quality of free-breathing XD-GRASP is equal to or superior to the one using standard breath hold acquisitions.

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