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Abstract #0756

The Optimality Principle for MR signal excitation and reception: new physical insights into ideal RF coil design

Daniel K. Sodickson1,2, Riccardo Lattanzi1,2, Manushka Vaidya1,2, Gang Chen1,2, Dmitry S. Novikov1,2, Christopher M. Collins1,2, and Graham C. Wiggins1,2

1Center for Advanced Imaging Innovation and Research (CAI2R) and Bernard and Irene Schwartz Center for Biomedical Imaging (CBI), Department of Radiology, New York University School of Medicine, New York, NY, United States, 2Sackler Institute of Graduate Biomedical Sciences, New York University School of Medicine, New York, NY, United States

Despite decades of collective experience, RF coil optimization has remained a largely empirical process, with clear insight into what might constitute truly task-optimal, as opposed to merely “good,” coil performance being difficult to come by. We introduce a new principle, the Optimality Principle, which allows one to predict the form of signal-optimizing current patterns on any arbitrary surface, using a simple conceptual framework. After a brief derivation of the principle, we illustrate its use in generating ideal current patterns for various experimental conditions, and in understanding the emergence of electric dipoles as strong performers at high frequency.

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