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Abstract #0902

Comprehensive T1-weighted dynamic liver MRI during free-breathing using fat/water separation, radial sampling, compressed sensing, parallel imaging, and motion-weighted reconstruction

Thomas Benkert1,2, Li Feng1,2, Luke Gerges1,2, Krishna P Shanbhogue1,2, Chenchan Huang1,2, Daniel K Sodickson1,2, Hersh Chandarana1,2, and Kai Tobias Block1,2

1Center for Advanced Imaging Innovation and Research (CAI2R), Department of Radiology, New York University School of Medicine, New York, NY, United States, 2Bernard and Irene Schwartz Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, NY, United States

Conventional clinical liver MRI consists of several exams, including pre-contrast in-phase, opposed-phase, and fat-saturated scans as well as multiple scans with contrast-enhancement. For each of these acquisitions, accurate breath-holding is required to ensure diagnostic image quality.

Here, we demonstrate how this entire protocol can be replaced by using a single comprehensive exam, where only one dataset has to be acquired during free-breathing. All relevant images can be retrospectively generated with model-based fat/water separation, which incorporates compressed sensing and parallel imaging. This approach has the potential to improve clinical workflow and eliminate the risk for failed exams caused by imperfect breath-holding.

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