Table 2.

The results of nSNR analysis

Field strength	Resolution/P‐values	Frontal lobe	Parietal lobe	Occipital lobe	Temporal lobe	Cerebellum	Sub. cortical WM	Sub. cortical GM	Brain stem	Whole brain
1.5T	Low	1.991	2.359	3.367	6.057	5.356	6.686	3.034	3.188	4.461
	Intermediate	3.533	2.540	5.957	8.723	6.800	9.470	6.043	4.055	6.779
	High	3.471	3.242	7.024	9.214	8.958	9.991	6.966	6.148	7.872
	Low vs. inter.	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
	Low vs. high	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
	High vs. inter	0.360	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
3T	Low	2.437	5.084	6.413	7.884	10.742	9.395	4.725	5.177	7.162
	Intermediate	5.322	6.346	9.607	12.362	12.273	13.514	7.541	5.677	10.192
	High	5.872	8.150	12.437	15.073	15.639	14.452	9.366	8.849	12.820
	Low vs. inter.	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
	Low vs. high	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
	High vs. inter	0.006	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
7T	Low	2.746	5.820	6.921	9.706	11.842	10.556	5.344	5.436	8.034
	Intermediate	6.203	6.857	11.778	15.724	14.100	17.070	8.932	5.870	12.133
	High	9.259	11.953	18.352	22.193	23.563	25.039	12.422	9.952	18.728
	Low vs. inter.	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
	Low vs. high	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
	High vs. inter	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
9.4T	Low	2.798	4.816	7.607	10.717	11.716	14.633	5.330	4.739	8.787
	Intermediate	6.105	6.202	13.087	17.028	15.351	21.924	8.407	5.282	12.860
	High	7.925	9.377	17.504	21.256	19.224	25.542	11.459	8.873	16.976
	Low vs. inter.	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
	Low vs. high	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
	High vs. inter	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001

The nSNR results of the high and intermediate resolution of all B ₀ fields were downsampled to the low spatial resolution to allow pairwise comparison. Median of nSNR of brain sub‐regions as well as whole brain and P‐values from a comparison of spatial resolutions are presented.