Abstract #0211

Accelerated T2-Weighted Imaging of the Abdomen with Self-Calibrating Wave-Encoded 3D Fast Spin Echo Sequences

Feiyu Chen¹, Valentina Taviani², Joseph Y. Cheng³, John M. Pauly¹, and Shreyas S. Vasanawala³

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

In this work, a self-calibrating wave-encoded 3D FSE technique was proposed with self-refocusing gradient waveforms and autocalibrated estimation of wave-encoding point-spread-function and coil sensitivity maps. Compared to conventional Cartesian approach at the same acceleration factor, the proposed method achieves reduced artifacts and better anatomical delineation for highly undersampled abdominal imaging. It enables 10-fold acceleration for 3D FSE scans of the abdomen, allowing 3D FSE sequences to be less sensitive to subject motion.

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