Table 1.

Relative SD (RSD) for Optimization of Different Entities (Flip Angle α, SI_GE, and SI_SE) on Different ROIs at Different Frequencies With 16-Element and 80-Element Coil Arrays

		ROI		Optimize α		Optimize SIGE		Optimize SISE
Frequency (MHz)	Number of coils	Name	Number of voxels	RSD before shim	RSD after shim	RSD before shim	RSD after shim	RSD before shim	RSD after shim
300	16	Axial	645	0.138	0.060	0.096	0.0072	0.294	0.015
	80	Axial	645	0.203	0.006	0.195	0.0065	0.637	0.0003
	16	Sagittal	541	0.214	0.051	0.140	0.0037	0.400	0.015
	80	Sagittal	541	0.316	0.006	0.308	0.0001	0.673	0.0003
	16	Coronal	461	0.264	0.023	0.186	0.0012	0.520	0.004
	80	Coronal	461	0.330	0.059	0.321	0.0001	0.736	0.0003
	16	Brain	10226	0.202	0.156	0.146	0.0388	2.577	0.109
	80	Brain	10226	0.324	0.053	0.316	0.0046	0.786	0.018
400	80	Brain	10226	0.501	0.075	0.485	0.0094	1.098	0.032
500	80	Brain	10226	0.525	0.109	0.500	0.0181	1.199	0.054
600	16	Axial	645	0.370	0.122	0.263	0.0230	0.438	0.067
	80	Axial	645	0.467	0.012	0.451	0.0003	1.105	0.001
	16	Sagittal	541	0.304	0.055	0.196	0.0082	0.412	0.026
	80	Sagittal	541	0.405	0.009	0.381	0.0002	0.877	0.001
	16	Coronal	461	0.586	0.126	0.344	0.0559	0.742	0.097
	80	Coronal	461	0.675	0.019	0.649	0.0353	1.431	0.054
	16	Brain	10226	0.413	0.222	0.282	0.0979	1.066	0.213
	80	Brain	10226	0.512	0.124	0.490	0.0470	1.181	0.109