Aspects of similarity in tissue optics with strong forward scattering.
The similarity studied in this paper links the diffusion exponent to the reduced albedo. If F is the ratio of the diffusion exponent assumed by standard diffusion theory to the actual value of the diffusion exponent, it is shown that for forward-scattering functions, as often found in biological tissues, the values of F approach limiting curves. These curves depend on a constant in the homologous scattering patterns, which can describe Henyey-Greenstein scattering patterns, but which can also approximate Rayleigh-Gans phase functions. Finally, a practical approach for estimating the solution for mixtures of these forward-scattering phase functions with isotropic scatterers has been given.
van de Hulst
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HC
University of Leiden, The Netherlands.
Graaff
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D006801:Humans; D008027:Light; D008962:Models, Theoretical; D055095:Optics and Photonics; D019047:Phantoms, Imaging; D011829:Radiation Dosage; D012542:Scattering, Radiation