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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 2, Iss. 10 — Oct. 31, 2007

Angular distribution of diffuse reflectance in biological tissue

Jinjun Xia and Gang Yao  »View Author Affiliations


Applied Optics, Vol. 46, Issue 26, pp. 6552-6560 (2007)
http://dx.doi.org/10.1364/AO.46.006552


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Abstract

We measured angular-resolved diffuse reflectance in tissue samples of different anisotropic characteristics. Experimental measurements were compared with theoretical results based on the diffusion approximation. The results indicated that the angular distribution in isotropic tissue was the same as in isotropic phantoms. Under normal incidence, the measured angular profiles of diffuse reflectance approached the Lambertian distribution when the evaluation location was far away from the incident point. The skewed angular profiles observed under oblique incidence could be explained using the diffuse model. The anisotropic tissue structures in muscle showed clear effects on the measurements especially at locations close to the light incidence. However, when measuring across the muscle fiber orientations, the results were in good agreement with those obtained in isotropic samples.

© 2007 Optical Society of America

OCIS Codes
(170.3660) Medical optics and biotechnology : Light propagation in tissues
(170.6930) Medical optics and biotechnology : Tissue
(170.7050) Medical optics and biotechnology : Turbid media
(290.1350) Scattering : Backscattering
(290.1990) Scattering : Diffusion

ToC Category:
Medical Optics and Biotechnology

History
Original Manuscript: April 16, 2007
Revised Manuscript: June 4, 2007
Manuscript Accepted: June 21, 2007
Published: September 5, 2007

Virtual Issues
Vol. 2, Iss. 10 Virtual Journal for Biomedical Optics

Citation
Jinjun Xia and Gang Yao, "Angular distribution of diffuse reflectance in biological tissue," Appl. Opt. 46, 6552-6560 (2007)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-46-26-6552

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