Estimation of possibility of multiple scattering medium optical parameters determination by backscattered light

The dependence of intensity distribution of diffusely reflected light during medium irradiation with narrow laser beam on optical parameters of multiple scattering media such as tissue has been investigated. The dependence of backscattered spot size on penetration depth as well as dependence of sensitivity on absorption and scattering coefficients have been analyzed by Monte Carlo simulation. Experiments in model multiple scattering media which determine the dependence between the spot size of backscattered radiation and optical characteristics have been carried out. Scanning with optical fibers have been used for measurements of intensity distribution.