Fig. 3.

Spectral dependence of ${\mu }_s^{\prime }$ over UV/Vis and NIR wavelengths for normal and IPF tissues where the fit is to the Whittle–Matérn correlation function. The IPF tissues are more highly scattering but have a stronger spectral slope (lower $m$), indicting a broader range of scatter sizes. There were $\sim 20$ independent measurements at each wavelength using the different tissues.