Figure 1:

A schematic description of the diffusion reflection measurements.

(A) A pencil beam illumination on a semi-infinite lattice with an absorption coefficient μa and a scattering coefficient μs. The diffusive reflectance is collected at a specific distance ρ from the light source. (B) The symmetry in the reflectance from the tissue’s surface in a given ρ is illustrated as circles around light irradiation point, with given radii ρ.

© De Gruyter