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Described is a 128-channel receive (Rx) array for 10.5T brain imaging, comprised of 120 small Rx loops and 8 of the 16 transmitter elements used as receivers. The coil is compared to another 10.5T 64-Rx array and to 7T 32- and 64-Rx arrays. The principal benefit for the same field strength was improved parallel imaging. Secondarily, important engineering innovations are demonstrated to suppress transmit/receive interactions and optimize transmit efficiency. Modest improvements to peripheral SNR were achieved for the 10.5T 128-Rx over 64-Rx array. A 50% improvement in central SNR was realized with the use of transmitter elements as receivers.
Lagore et al. (Wed,) studied this question.