Figure 3: Effects of absorption and anisotropy factor g.
From: Photon diffusion near the point-of-entry in anisotropically scattering turbid media
Dimensionless reflectance for the PFC diffusion theory compared with the MC simulations and the standard diffusion theory (DA) for the case of the H–G phase function with different absorptions; (a) blue lines and circles—g=0.9 and relatively weak absorption (
), red lines and circles—g=0.9 and relatively high absorption (
). Dashed lines—standard DA, solid lines—PFC diffusion theory, circles—MC simulations. Although the standard diffusion theory gives significant errors for 
the PFC DA does not suffer from this problem and agrees with the MC simulations for all distances; (b) effect of different anisotropy factors g. Red represents g=0 and blue represents g=0.9. The PFC diffusion theory (solid lines) agrees with the MC simulations (circles) for all distances, whereas the standard diffusion theory (black dashed line) does not have any dependence on the anisotropy factor g. (Note that the standard diffusion theory and the PFC diffusion theory curves exactly overlap for g=0.) Inset: the separate contributions of the diffuse reflectance (black line) and PFC reflectance (blue line) and their asymptotic behaviour (dashed lines.)
