Fig. 4.

Reduced scattering coefficients, ${\mu }_s^{\prime }$, (${\mathrm{cm}}^{-1}$) for various tissue types, tumor tissue, and pleural sites. The results are expressed as median values (center horizontal lines within boxes), the 95% CI (shaded notch region), IQR (entire box), non-outlier (defined as values contained within the $1.5\times \mathrm{IQR}$) maximum and minimum values (horizontal whiskers), for pre-PDT and post-PDT conditions at 665 nm, obtained from diffuse spectral measurement analysis.