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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 10 — May. 14, 2007
  • pp: 5905–5918

An improved Monte Carlo diffusion hybrid model for light reflectance by turbid media

Bin Luo and Sailing He  »View Author Affiliations


Optics Express, Vol. 15, Issue 10, pp. 5905-5918 (2007)
http://dx.doi.org/10.1364/OE.15.005905


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Abstract

This paper introduces an improved diffusion model which is accurate and fast in computation for the cases of μa/μ’s < 007 as good as the conventional diffusion model for the cases of μa/μ’s < 0.007 for surface measurement, hence more suitable than the conventional model to be the forward model used in the image reconstruction in the diffuse optical tomography. Deviation of the diffusion approximation (DA) on the medium surface is first studied in the Monte Carlo (MC) diffusion hybrid model for reflectance setup. A modification of DA and an improved MC diffusion hybrid model based on this modified DA are introduced. Numerical tests show that for media with relatively strong absorption the present modified diffusion approach can reduce the surface deviation significantly in both the hybrid and pure diffusion model, and consumes nearly no more computation time than the conventional diffusion approach.

© 2007 Optical Society of America

OCIS Codes
(170.5270) Medical optics and biotechnology : Photon density waves
(170.6960) Medical optics and biotechnology : Tomography
(170.7050) Medical optics and biotechnology : Turbid media
(290.1990) Scattering : Diffusion

ToC Category:
Scattering

History
Original Manuscript: January 8, 2007
Revised Manuscript: March 14, 2007
Manuscript Accepted: April 25, 2007
Published: April 30, 2007

Virtual Issues
Vol. 2, Iss. 6 Virtual Journal for Biomedical Optics

Citation
Bin Luo and Sailing He, "An improved Monte Carlo diffusion hybrid model for light reflectance by turbid media," Opt. Express 15, 5905-5918 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-10-5905


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