Figure 2:

A. Conductivity and relative permittivity of the tissue classes present in the Duke body model. Tissues can be naturally classified into air, bone, fat, soft tissues (red oval), eyes, and CSF (marked by red X’s). The average relative permittivity (ε), conductivity (σ), and density (ρ) values for these six classes are also shown in the graph. B. Table summarizing the body model reduction levels studied in this work. The columns indicate different Reduced Duke models numbered from 1 to 8. The rows indicate tissue types. Reduced body models were obtained by grouping some tissue classes together, as indicated by the shared colors. When grouping N tissue classes, the permittivity and conductivity values of the new group were assigned to the weighted average of the N classes (by volume). Reduced Duke Model 4 is highlighted in the red box because it is the most complex model achievable using a single DIXON scan.