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Proceedings Paper

Method to measure the diffusion coefficient of a layered medium
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Paper Abstract

A method to measure the diffusion coefficient of homogeneous and layered media, based on multi-distance measurements of time-resolved reflectance is proposed. The diffusion coefficient is retrieved by fitting procedures on the logarithm of the ratio of two reflectances measured at two different source-receiver distances. The inversion procedure uses analytical models derived from the diffusion equation and it is not affected by the boundary conditions used. For layered media the inversion procedure retrieves the diffusion coefficient of the first layer. The proposed procedure is simpler than others usually employed and also provides a reliable criterion for retrieval of information on the layered structure of the diffusive medium.

Paper Details

Date Published: 29 June 2001
PDF: 8 pages
Proc. SPIE 4250, Optical Tomography and Spectroscopy of Tissue IV, (29 June 2001); doi: 10.1117/12.434475
Show Author Affiliations
Fabrizio Martelli, Univ. degli Studi di Firenze, INFM, and Mechanical Engineering Lab. (Italy)
Angelo Sassaroli, Mechanical Engineering Lab. (United States)
Yukio Yamada, Mechanical Engineering Lab. (Japan)
Giovanni Zaccanti, Univ. degli Studi di Firenze and INFM (Italy)

Published in SPIE Proceedings Vol. 4250:
Optical Tomography and Spectroscopy of Tissue IV
Britton Chance; Robert R. Alfano; Bruce J. Tromberg; Mamoru Tamura; Eva Marie Sevick-Muraca, Editor(s)

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