Table 2: Measured standard deviation of reconstructed conductivity from Figure 5. ROI (region of interest) was located in the normal gray, white matter, and anomalies with the voxel size of 5 × 5 × 5 mm3. Note CoReHA provides only conductivity contrast information. We therefore show standard deviation of conductivity values as a quantitative criterion representing an improvement in conductivity images.

CurrentMeasured standard deviation in conductivity (mS/m)
White (gray) matterAnomaly 1Anomaly 2
1 NEX4 NEX8 NEX1 NEX4 NEX8 NEX1 NEX4 NEX8 NEX

1 mA1.4 (6.3)0.9 (3.1)0.6 (2.6)1.30.60.45.42.72.4
3 mA1.1 (5.9)0.6 (2.4)0.4 (2.1)0.80.40.35.22.42.0
5 mA0.9 (4.7)0.4 (1.9)0.3 (1.4)0.60.40.23.22.31.9