Table 2.

Summary of the mean B₁⁺, minimum B₁⁺, coefficient of variation (CoV(B₁⁺_ROI)) across the entire 3D heart of the human voxel models Duke and Ella, and the maximum SAR_10g for an excitation vector with equal phase (0°) and amplitude (1 V) for all channels 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

	Excitation with equal phase (0°) and amplitude (1)
	mean B1+ROI [µT/√kW]	min. B1+ROI [µT/√kW]	max. SAR10g [W/kg]	CoV [%]	Pfwd [kW]
Duke
7.0 T BL
SGBT	5.21	0.02	0.30	45	64
BT	3.40	0.03	0.23	44	32
FD	5.05	0.01	0.25	39	16
14.0 T SCC
SGBT	3.37	0.05	0.62	52	64
BT	1.96	0.01	0.67	55	32
FD	3.38	0.04	0.57	48	16
14.0 T DCC
SGBT	4.58	0.03	0.45	56	128
BT	2.80	0.03	0.25	46	64
FD	2.51	0.03	0.41	48	32
Ella
7.0 T BL
SGBT	5.41	0.06	0.29	39	64
BT	4.31	0.04	0.19	41	32
FD	6.17	0.06	0.28	39	16
14.0 T SCC
SGBT	3.70	0.01	1.08	51	64
BT	2.44	0.02	0.50	44	32
FD	3.51	0.02	0.40	41	16
14.0 T DCC
SGBT	4.85	0.03	0.49	52	128
BT	3.21	0.04	0.22	39	64
FD	2.79	0.03	0.27	42	32