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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Stephen A. Burns
  • Vol. 23, Iss. 8 — Aug. 1, 2006
  • pp: 1937–1945

Perturbation approach to the time-resolved transmittance for a spatially varying scattering inclusion in a diffusive slab

Rosario Esposito, Sergio De Nicola, Maria Lepore, and Pietro Luigi Indovina  »View Author Affiliations


JOSA A, Vol. 23, Issue 8, pp. 1937-1945 (2006)
http://dx.doi.org/10.1364/JOSAA.23.001937


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Abstract

In the framework of the perturbation approach to the diffusion equation, an analytical expression is derived to describe the effects on the time-resolved transmittance due to the presence of a spatially varying scattering inclusion hidden inside a diffusive slab. This formula assumes that the reduced scattering coefficient of the inclusion is spatially Gaussian distributed and complements that obtained for the absorptive case. The accuracy and the application range of the perturbed transmittance are investigated through comparisons with the numerical solutions of the time-dependent diffusion equation given by using the finite-element method. The proposed perturbation model is validated through a fitting procedure that determines the relative error in retrieving the scattering perturbation parameter of the inclusion located at the midplane of the slab.

© 2006 Optical Society of America

OCIS Codes
(170.3660) Medical optics and biotechnology : Light propagation in tissues
(170.5280) Medical optics and biotechnology : Photon migration
(170.6510) Medical optics and biotechnology : Spectroscopy, tissue diagnostics
(290.1990) Scattering : Diffusion
(290.7050) Scattering : Turbid media

ToC Category:
Medical Optics and Biotechnology

History
Original Manuscript: September 9, 2005
Revised Manuscript: February 16, 2006
Manuscript Accepted: February 16, 2005

Virtual Issues
Vol. 1, Iss. 9 Virtual Journal for Biomedical Optics

Citation
Rosario Esposito, Sergio De Nicola, Maria Lepore, and Pietro Luigi Indovina, "Perturbation approach to the time-resolved transmittance for a spatially varying scattering inclusion in a diffusive slab," J. Opt. Soc. Am. A 23, 1937-1945 (2006)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-23-8-1937

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