Abstract
A new scattering phase function is presented to approximate the accurate phase function from Mie theory. The new phase function demonstrates much better agreement with Mie theory for biomedical media (with the mean cosine of scattering angles g>0.8) than the Henyey-Greenstein phase function, which has been widely adopted by researchers in the biomedical optics field. Using the new phase function as the integral kernel in the radiative transport equation, an analytical result for the integral term of the equation is obtained for highly aligned beams. This may lead to a semi-analytical solution to the time-dependent radiative transport equation for time-resolved spectroscopy.
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