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Abstract #3927

Method of choice to increase the motion-robustness for free-breathing applications: Self-gating, motion-weighting, or extra-dimensional reconstruction

Thomas Benkert1,2, Li Feng1,2, Mark E Bittman1,2, Justin Ream1,2, Daniel K Sodickson1,2, Ricardo Otazo1,2, Kai Tobias Block1,2, and Hersh Chandarana1,2

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

Previously proposed techniques based on non-Cartesian or modified Cartesian sampling schemes allow for free-breathing acquisitions with solid motion-robustness. However, residual artifacts such as motion blurring often remain. Techniques including self-gating, motion-weighting, and extra-dimensional reconstruction have been proposed to further improve image quality.

Here, an analysis of these techniques is provided by performing multiple reconstructions of several volunteer and patient datasets, which were then evaluated by radiologists.

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