Simulation results are presented for 64-channel phased arrays operating at frequencies of 296.5 MHz (7T) and 447 MHz (10.5T) with 4.5 cm element loop diameters. FDTD simulations were performed per channel to obtain B1 receive fields of the coil array placed around a 2 mm resolution voxel anatomical head model. Sum-of-squares B1 efficiency maps show improved performance of the array at 10.5T compared to 7T over the whole head region.
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