Table 1.

Summary for all the important symbols appeared in the text

λex	Excitation wavelength
λ	Emission wavelength
p	Point in the 3D space
ps	Point on the detector surface
ω	Incoming direction
ω′	Scattering direction
S	Source term of the RTE
fex	Fluorophore excitation spectrum
fem	Fluorophore emission spectrum
Lve	Radiance emitted from point p
Li	Incoming radiance to point p
I	Light flux
IϕA	Light flux density
σs	Scattering coefficient
σ	Absorption cross section
p	Phase function
ϕ	Quantum yield