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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Editor: Franco Gori
  • Vol. 29, Iss. 10 — Oct. 1, 2012
  • pp: 2174–2180

Empirical model for target depth estimation used in the time-domain subsurface imaging

Miloš Šormaz and Patrick Jenny  »View Author Affiliations

JOSA A, Vol. 29, Issue 10, pp. 2174-2180 (2012)

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Monte Carlo simulations were performed in order to obtain reflectance measurements from phantoms typically used in biomedical optics when either unpolarized or circularly polarized incident light is used. Phantoms contain spherical targets of different diameters, placed at different depths, with higher absorption than the surrounding medium, which are detected using a coaxial setup of laser and detector. The considered turbid media have highly anisotropic scattering phase functions, so detected light for the considered times of flight is not diffuse, but rather in the multiple-scattering regime. Therefore, the target reconstruction methods typically used in diffuse optical imaging cannot be employed. However, spatially resolved reflectance measurements in the time domain allow use of a novel reconstruction method based on the approximation of average photon trajectories, which are functions of the separation distance from the point of incidence and of the time of flight. With the approximated average photon trajectories, one can estimate the depth of the target.

© 2012 Optical Society of America

OCIS Codes
(030.5620) Coherence and statistical optics : Radiative transfer
(120.5700) Instrumentation, measurement, and metrology : Reflection
(260.5430) Physical optics : Polarization
(290.4210) Scattering : Multiple scattering
(320.7100) Ultrafast optics : Ultrafast measurements
(110.0113) Imaging systems : Imaging through turbid media

ToC Category:

Original Manuscript: June 26, 2012
Manuscript Accepted: August 12, 2012
Published: September 20, 2012

Miloš Šormaz and Patrick Jenny, "Empirical model for target depth estimation used in the time-domain subsurface imaging," J. Opt. Soc. Am. A 29, 2174-2180 (2012)

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