Safety Evaluation of Algorithms to Optimize Transmit Efficiency for Local Excitation with a Transmit Array

Giuseppe Carluccio¹, Christopher Michael Collins¹

Recently methods have been presented to provide optimum driving currents for transmit array which maximize the circularly polarized component of the B1 field in a small region of interest and minimize the overall power transmitted. In this work we evaluate safety parameters, such as the 10g local average SAR and temperature increase, when some of these methods are applied for two different regions of interest in a body-sized transmit array.