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Abstract #2618

An Analytical Method to Optimize Transmit Efficiency for Local Excitation with a Transmit Array

Giuseppe Carluccio1, 2, Christopher Michael Collins2, Danilo Erricolo1

1Electrical and Computer Engineering, University of Illinois at Chicago, Chicago, IL, United States; 2Radiology, Pennsylvania State University, Hershey, PA, United States

We present an analytically-based method for rapid optimization of the local RF magnetic (B1+) field intensity for a given RF power through a transmit array. With knowledge of the B1+ field distribution generated by each single coil of the array, both the phases and the amplitudes of each coil current are optimized to provide the maximum magnitude of the B1+ field in a specific location of the body, and the minimum power transmitted through the array and, consequently, reducing the whole body SAR.