Table 1.

Quantitative evaluation of the proposed DL method under different experimental settings, with the FEM solutions as reference. Mean and standard deviation of the correlation coefficient (CC) and pointwise magnitude error (PME) measures within different regions of interest (ROIs) are demonstrated. ROI definition: gray and whiter matter (GM&WM), gray matter (GM), white matter (WM), region thresholded at the 95th percentile of E-field magnitude (95th percentile), region thresholded at the 50% of maximum E-field magnitude (50% of max).

	CC GM&WM	CC GM	CC WM	CC 95th percentile	CC 50% of Max	PME GM&WM	PME GM	PME WM	PME 95th percentile	PME 50% of Max
Setting 1 train	0.984±0.005	0.984±0.004	0.985±0.006	0.958±0.007	0.856±0.035	0.010±0.002	0.010±0.002	0.010±0.002	0.025±0.003	0.044±0.003
Setting 1 test	0.978±0.006	0.979±0.005	0.977±0.008	0.948±0.014	0.837±0.034	0.012±0.003	0.012±0.003	0.013±0.003	0.030±0.005	0.049±0.008
Setting 2 test (seen dir)	0.979±0.005	0.978±0.005	0.980±0.006	0.933±0.017	0.801±0.127	0.013±0.003	0.013±0.003	0.013±0.003	0.034±0.007	0.055±0.011
Setting 2 test (unseen dir)	0.957±0.012	0.961±0.010	0.953±0.015	0.918±0.022	0.782±0.113	0.019±0.005	0.019±0.005	0.022±0.005	0.042±0.011	0.064±0.014
Setting 3 test	0.984±0.004	0.983±0.004	0.985±0.004	0.943±0.010	0.819±0.052	0.012±0.002	0.012±0.002	0.012±0.003	0.036±0.005	0.055±0.006