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Abstract:
Improvement of SNR is a critical step in designing any MRI RF coil. Use of arrays instead of a single coil is a major technique for the SNR enhancement. Designing an Rx-array commonly includes a choice of the type of elements (e.g. loops, striplines, dipoles), number of elements, decoupling method, coverage. The most common element of Rx-arrays is a surface loop, which has been used for human Rx-array designs at lower (1.5T, 3T) and ultra-high field (UHF, >7T). The presentation overviews most important steps of designing RF arrays including an optimization of the individual elements, decoupling, detuning, interfacing, cable routing.