Abstract #0570

Free-breathing volumetric fat/water separation by combining radial sampling, compressed sensing, and parallel imaging

Thomas Benkert^1,2, Daniel K. Sodickson^1,2, Hersh Chandarana^1,2, and Kai Tobias Block^1,2

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

This work presents a model-based fat/water separation technique for radial sampling, which takes into account the off-resonant blurring of fat and integrates both compressed sensing and parallel imaging. By combining this reconstruction scheme with 3D radial stack-of-stars sampling, volumetric and motion-robust water and fat maps as well as in-phase/opposed-phase images can be generated under free-breathing. The approach is demonstrated at 1.5T and 3T, including volunteer and patient measurements.

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