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Photographs of the five coils examined in this study: (a) the developed 31P/1H 16-channel array, (b) 31P/1H knee birdcage coil manufactured by Rapid Biomedical, (c) 1H 24-channel Duyn array by Nova Medical, (d) 1H head birdcage coil by Invivo Corp, and (e) 31P/1H single-channel loop by Quality Electrodynamics.
