Figure 3.

Model-derived spectra. The median spectra for each of μ_a(λ) (A,B), μ_s^′(λ) (C,D), and R_t,x(λ) (E,F) were calculated for normal tissue (blue line) and tumor (red line). Error bars represent the interquartile range. P-values from the Wilcoxon-rank sum analysis are indicated by the black line, left column, with the green horizontal line crossing at P = 0.05. Associated AUC values are shown as the black line, right column. (Color online only.)