Comparison of Simulated Parallel Transmit Body Arrays at 3 T Using Excitation Uniformity, Global SAR, Local SAR, and Power Efficiency Metrics

摘要

PurposeWe compare the performance of eight parallel transmit (pTx) body arrays with up to 32 channels and a standard birdcage design. Excitation uniformity, local specific absorption rate (SAR), global SAR, and power metrics are analyzed in the torso at 3 T for radiofrequency (RF)-shimming and 2-spoke excitations.