Abstract
In this research, we applied the Monte Carlo method to simulate photon transport in a biological tissue, consisting of epidermal, dermis, and blood vessels. Particularly, we computed the fluence rate of the system at a wavelength of 400 nm using different beam sources, such as collimated beam, Gaussian beam, and isotropic point sources. In addition, the fluence rate is calculated within the collimated beam at different wavelengths between 300–1000 nm by considering the absorption coefficient (μa) for blood, dermis, and epidermis. For the collimated beam, the resulting fluence rate was found almost similar in the case of the epidermis and dermis at wavelengths between 600–1000 nm, whereas the blood vessels occur at a wavelength of 400 nm with a maximum absorption coefficient of blood (μa) of 3586 cm–1. The present study illustrated the ability of the penetration of light in biological tissues and the escaped light could provide the information about the components of the biological tissue. From the theoretical perspective, the comprehension of light-tissue interactions can support the field of biomedical optics.
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