Abstract
In this paper, the optical properties of skin lesion are determined with the help of laser reflectometry. The result is compared with the phantom and simulation values to obtain an accurate result. Surface backscattering is determined by laser reflectometry. The tissue-equivalent phantom is prepared with the help of white paraffin wax mixed with various color pigments in multiple proportions. A familiar Monte Carlo simulation is used to analyze the optical properties of the tissue. The normalized backscattered intensity (NBI) signals from the tissue surface, measured by the output probes after digitization, are used to reconstruct the reflectance images of tissues in various layers below the skin surface. From NBI profiles measured at various locations of the tissues on the forearm, the corresponding optical parameters, the scattering (μ s ) and absorption (μ a ) coefficients, and the anisotropy parameter g are determined by matching these with profiles simulated by the Monte Carlo procedure. The correlation analysis between the lesion thickness and the diffuse reflectance gives the optical wavelengths which are selected for multispectral images of skin lesions. Comparison of results shows the presence of abnormal level in the tissue.
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