Theoretical study on light distribution in biological tissue with strong absorption

Ying Liu; Yunhan Luo; Yong Ni; Jingguo Zhu; Kexin Xu

doi:10.1117/12.482950

12 September 2002 Theoretical study on light distribution in biological tissue with strong absorption

Ying Liu, Yunhan Luo, Yong Ni, Jingguo Zhu, Kexin Xu

Proceedings Volume 4916, Optics in Health Care and Biomedical Optics: Diagnostics and Treatment; (2002) https://doi.org/10.1117/12.482950
Event: Photonics Asia, 2002, Shanghai, China

Abstract

Radiance in biological tissue with strong absorption is studied, by solving the steady-state Boltzmann transport equation in P3 approximation for an isotropy point source. We compare the diffusion solution to the total reflectance and the first two terms of the reflectance in P3 approximation respectively, and find that P3 approximation can improve the accuracy, especially in cases of strong absorption. Light radial distribution at the surface is also studied, it is shown that light centralizes in a small area as absorption tends strong. Through many calculations we have drawn a relation between radial width oflight distribution and the absorption coefficient.

Citation Download Citation

Ying Liu, Yunhan Luo, Yong Ni, Jingguo Zhu, and Kexin Xu "Theoretical study on light distribution in biological tissue with strong absorption", Proc. SPIE 4916, Optics in Health Care and Biomedical Optics: Diagnostics and Treatment, (12 September 2002); https://doi.org/10.1117/12.482950

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