Table 1.

Maximum temperature, maximum 1g SAR, maximum 10g SAR, and NRMSE resulting from RF pulses designed with various strict constraints for the head model in head transmit array for 6 minutes of RF exposure. (NRMSE is defined as the flip angle root mean square error between the achieved and the targeted profile divided by the root mean square of the target excitation flip angle profile)

Pulse Design Type	Unconstrained	10g SAR Constrained	Temperature Constrained
Maximum local temperature (°C)	39.3	38.4	39.0
Maximum 1g SAR (W/kg)	35.1	17.6	30.5
Maximum 10g SAR (W/kg)	20.9	10.0	18.0
NRMSE (%)	7.8	21.0	8.8