Figure 2.

Spectra of (a) absorption coefficient μ_a, (b) reduced scattering coefficient μ_s’, and (c) initial photon weight over wavelength range between 400 – 1000nm. Solid lines in (a) and (b) represent the spectra of average tissue optical properties measured in patients [2], for which μ_a and μ_s’ at 665nm are 0.3 cm⁻¹ and 10 cm⁻¹ as indicated by ‘x’. Dashed lines in (a) and (b) represent the maximum and minimum tissue optical properties spectra used in MC simulations. The ranges of μ_a and μ_s’ at 665nm are 0.1 – 1 cm⁻¹ and 5 – 40 cm⁻¹, as indicated by ‘x’.