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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 13 — May. 1, 1998
  • pp: 2774–2780

Real-Time Method for Fitting Time-Resolved Reflectance and Transmittance Measurements with a Monte Carlo Model

Antonio Pifferi, Paola Taroni, Gianluca Valentini, and Stefan Andersson-Engels  »View Author Affiliations


Applied Optics, Vol. 37, Issue 13, pp. 2774-2780 (1998)
http://dx.doi.org/10.1364/AO.37.002774


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Abstract

An efficient method is proposed for the evaluation of theabsorption and the transport scattering coefficients from atime-resolved reflectance or transmittance distribution. Theprocedure is based on a library of Monte Carlo simulations and is fastenough to be used in a nonlinear fitting algorithm. Tests performedagainst both Monte Carlo simulations and experimental measurements ontissue phantoms show that the results are significantly better thanthose obtained by fitting the data with the diffusion approximation, especially for low values of the scattering coefficient. The methodrequires an a priori assumption on the value of theanisotropy factor g. Nonetheless, the transportscattering coefficient is rather independent of the exact knowledge ofthe g value within the range 0.7 < g < 0.9.

© 1998 Optical Society of America

OCIS Codes
(170.6510) Medical optics and biotechnology : Spectroscopy, tissue diagnostics
(290.7050) Scattering : Turbid media
(300.6500) Spectroscopy : Spectroscopy, time-resolved

Citation
Antonio Pifferi, Paola Taroni, Gianluca Valentini, and Stefan Andersson-Engels, "Real-Time Method for Fitting Time-Resolved Reflectance and Transmittance Measurements with a Monte Carlo Model," Appl. Opt. 37, 2774-2780 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-13-2774

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