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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 Otazo1,2
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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