Abstract #3947

Motion-Robustness Evaluation and Motion Correction of Wave-Encoding

Feiyu Chen¹, Joseph Y Cheng², Tao Zhang³, John M Pauly¹, and Shreyas S Vasanawala²

¹Electrical Engineering, Stanford University, Stanford, CA, United States, ²Radiology, Stanford University, Stanford, CA, United States, ³Global MR Applications and Workflow, GE Healthcare, Houston, TX, United States

The motion-robustness of a 3D wave-encoded SPGR sequence was evaluated by simulating the acquisition of a Gaussian-profile object with periodic motion. Compared with non-wave-encoded sampling, wave-encoding provides better motion property because of wider diffusion of motion artifacts. A motion-correction method was also proposed for wave-encoding based on 3D translational motion estimates. This motion-correction method is demonstrated to effectively reduce motion artifacts in wave-encoded scans.

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