Table 5.

Summary of the mean B₁⁺, minimum B₁⁺, coefficient of variation (CoV(B₁⁺_ROI)) across the entire heart of the human voxel models Duke and Ella, and the maximum SAR_10g for the multiobjective phase and amplitude optimizer, with a trade-off between minimum B₁⁺ in the heart and maximum SAR_10g using self-grounded bow-tie (SGBT) antenna building block, bow-tie (BT) antenna building block, and fractionated dipole (FD) antenna RF arrays at 7.0 T (baseline, BL) and 14.0 T (same channel count, SCC, double channel count, DCC). The total RF power for the excitation vectors (P_fwd) is presented for a lossless 2 kW power at each channel

	Multiobjective optimization
	mean B1+ROI [µT/√kW]	min. B1+ROI [µT/√kW]	max. SAR10g [W/kg]	CoV [%]	Pfwd [kW]
Duke
7.0 T BL
SGBT	6.76	2.84	0.36	38	21
BT	2.53	1.16	0.04	32	8
FD	6.18	2.76	0.28	33	9
14.0 T SCC
SGBT	4.32	0.91	1.02	55	21
BT	1.80	0.47	0.23	54	13
FD	4.39	0.59	0.52	56	8
14.0 T DCC
SGBT	4.63	0.73	0.77	57	27
BT	2.54	0.52	0.17	55	13
FD	3.86	0.56	0.43	59	8
Ella
7.0 T BL
SGBT	6.96	4.29	0.28	26	20
BT	3.80	1.95	0.10	28	8
FD	7.34	3.88	0.24	27	8
14.0 T SCC
SGBT	5.60	1.44	1.85	65	8
BT	2.38	0.48	0.21	41	7
FD	4.82	0.98	0.53	54	6
14.0 T DCC
SGBT	5.71	1.51	0.81	58	20
BT	3.04	0.94	0.22	48	11
FD	3.79	0.88	0.39	59	8