Table 1:

Global and peak SAR levels

	Duke Centered	Ella Centered	Charlie Centered	Charlie −50-mm FH	Charlie +50-mm FH
Global SAR levels
Average SAR for 1 Watt input power (W kg⁻¹)	0.066	0.069	0.062	0.050	0.075
Average SAR per B₁² (W kg⁻¹ µT^–2)	0.462	0.465	0.289	0.454	0.474
Average B₁⁺ in central section for 1 Watt input power (µT)^{^a}	0.379	0.385	0.466	0.333	0.398
Peak local SAR levels
Peak local SAR (10-g averaged) for 1 Watt input power (W kg⁻¹)	0.435	0.398	0.321	0.213	0.487
Peak local SAR (10-g averaged) per B₁² (W kg⁻¹µT^–2)	3.04	2.63	1.48	1.92	3.08

↵a The power optimization procedure of the MR imaging scanner software calibrates the needed input power to achieve a certain B₁ in the subject. This calibration is based on the average B₁⁺ in a central section of the subject (brain in this case).