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Chinese Optics Letters

Chinese Optics Letters


  • Vol. 7, Iss. 6 — Jun. 1, 2009
  • pp: 515–518

Hybrid diffusion approximation in highly absorbing media and its effects of source approximation

Huijuan Tian, Ying Liu, Lijun Wang, Yuhui Zhang, and Lifeng Xiao  »View Author Affiliations

Chinese Optics Letters, Vol. 7, Issue 6, pp. 515-518 (2009)

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A modified diffusion approximation model called the hybrid diffusion approximation that can be used for highly absorbing media is investigated. The analytic solution of the hybrid diffusion approximation for reflectance in two-source approximation and steady-state case with extrapolated boundary is obtained. The effects of source approximation on the analytic solution are investigated, and it is validated that two-source approximation in highly absorbing media to describe the optical properties of biological tissue is necessary. Monte Carlo simulation of recovering optical parameters from reflectant data is done with the use of this model. The errors of recovering \mu_{a} and \mu_{s} are smaller than 15% for the reduced albedo between 0.77 and 0.5 with the source-detector separation of 0.4-3 mm.

© 2009 Chinese Optics Letters

OCIS Codes
(170.3660) Medical optics and biotechnology : Light propagation in tissues
(170.7050) Medical optics and biotechnology : Turbid media
(290.1990) Scattering : Diffusion

Huijuan Tian, Ying Liu, Lijun Wang, Yuhui Zhang, and Lifeng Xiao, "Hybrid diffusion approximation in highly absorbing media and its effects of source approximation," Chin. Opt. Lett. 7, 515-518 (2009)

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