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Real-time method for fitting time-resolved reflectance and transmittance measurements with a Monte Carlo model

Pifferi, A; Taroni, P; Valentini, G and Andersson-Engels, Stefan LU (1998) In Applied Optics 37(13). p.2774-2780
Abstract
An efficient method is proposed for the evaluation of the absorption and the transport scattering coefficients from a time-resolved reflectance or transmittance distribution. The procedure is based on a library of Monte Carlo simulations and is fast enough to be used in a nonlinear fitting algorithm. Tests performed against both Monte Carlo simulations and experimental measurements on tissue phantoms show that the results are significantly better than those obtained by fitting the data with the diffusion approximation, especially for low values of the scattering coefficient. The method requires an a priori assumption on the value of the anisotropy factor g. Nonetheless, the transport scattering coefficient is rather independent of the... (More)
An efficient method is proposed for the evaluation of the absorption and the transport scattering coefficients from a time-resolved reflectance or transmittance distribution. The procedure is based on a library of Monte Carlo simulations and is fast enough to be used in a nonlinear fitting algorithm. Tests performed against both Monte Carlo simulations and experimental measurements on tissue phantoms show that the results are significantly better than those obtained by fitting the data with the diffusion approximation, especially for low values of the scattering coefficient. The method requires an a priori assumption on the value of the anisotropy factor g. Nonetheless, the transport scattering coefficient is rather independent of the exact knowledge of the g value within the range 0.7 < g < 0.9. (C) 1998 Optical Society of America. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Applied Optics
volume
37
issue
13
pages
2774 - 2780
publisher
OSA
external identifiers
  • scopus:0348071634
ISSN
2155-3165
DOI
10.1364/AO.37.002774
language
English
LU publication?
yes
id
becfd7ea-ce9b-4906-94f6-f5a697528dd7 (old id 2259172)
date added to LUP
2012-02-17 22:19:01
date last changed
2017-07-30 04:51:28
@article{becfd7ea-ce9b-4906-94f6-f5a697528dd7,
  abstract     = {An efficient method is proposed for the evaluation of the absorption and the transport scattering coefficients from a time-resolved reflectance or transmittance distribution. The procedure is based on a library of Monte Carlo simulations and is fast enough to be used in a nonlinear fitting algorithm. Tests performed against both Monte Carlo simulations and experimental measurements on tissue phantoms show that the results are significantly better than those obtained by fitting the data with the diffusion approximation, especially for low values of the scattering coefficient. The method requires an a priori assumption on the value of the anisotropy factor g. Nonetheless, the transport scattering coefficient is rather independent of the exact knowledge of the g value within the range 0.7 &lt; g &lt; 0.9. (C) 1998 Optical Society of America.},
  author       = {Pifferi, A and Taroni, P and Valentini, G and Andersson-Engels, Stefan},
  issn         = {2155-3165},
  language     = {eng},
  number       = {13},
  pages        = {2774--2780},
  publisher    = {OSA},
  series       = {Applied Optics},
  title        = {Real-time method for fitting time-resolved reflectance and transmittance measurements with a Monte Carlo model},
  url          = {http://dx.doi.org/10.1364/AO.37.002774},
  volume       = {37},
  year         = {1998},
}