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. Author manuscript; available in PMC: 2013 Apr 1.
Published in final edited form as: Magn Reson Med. 2011 Nov 18;67(4):954–964. doi: 10.1002/mrm.23070

Table 2.

The simulated and experimental transmit efficiency (in the prostate) along with global and local peak SAR for the both the eight- and sixteen-channel arrays. In all cases, B1+ shimming was used to increase the transmit efficiency in the prostate.

B1+ Local (10 g avg.) Whole Body
Array Mean μT/W0.5 Std Dev μT/W0.5 % inhomo. SAR/W SAR/(B1+)2 SAR/W SAR/(B1+)2
8 Simulation 0.202 0.018 9% 0.355 8.70 0.008 0.188
in vivo 0.169 0.017 10% - - - -
16 Simulation 0.267 0.022 8% 0.340 4.77 0.009 0.119
in vivo 0.206 0.025 12% - - - -