Fig. 7:

(a) Small targets with diameters 1.59 mm, 2.78 mm, 3.57 mm, and 4.76 mm used in the distinguishability study. (b) Target placement at the center of the saline tank. (c) Reconstructions of conductivity (left) and susceptivity (right) of the 1.59 mm diameter target in the center of the tank at 199 kHz. Note that the target has zero permittivity, and so it is a positive attribute that the susceptivity image is homogeneous.