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Abstract #0661

PhysiCal: A rapid calibration scan for B0, B1+, coil sensitivity and Eddy current mapping.

Siddharth Srinivasan Iyer1,2, Congyu Liao2, Qing Li3, Mary Katherine Manhard2, Avery Berman2, Berkin Bilgic2, and Kawin Setsompop2
1Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, United States, 2Athinoula A. Martinos Center for Biomedical Imaging, Charlestown, MA, United States, 3MR Collaborations, Siemens Healthcare Ltd, Shanghai, China

Calibration scans that acquire coil sensitivity, B0 and B1+ inhomogeneities information play an important role in enabling modern acquisition and reconstruction techniques. This work proposes a unified, rapid calibration sequence termed Physics Calibration (PhysiCal) to obtain accurate B0, Eddy, B1+ and coil sensitivity maps. PhysiCal utilizes a carefully designed mix of full and variable density sampling acquisitions across echoes with synergistic constrained and eigenvalue reconstruction for robust and accurate recovery of whole-brain B0, B1+, Eddy and 32-channel coil sensitivity maps in just 11 seconds at 1 mm x 2 mm x 2mm resolution at 3T.

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