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Proceedings Paper

Path integral description of light transport in tissues
Author(s): Steven L. Jacques; Xujing Wang
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Paper Abstract

The early photons that arrive at a collector through a large thickness of tissue have potential for imaging internal organ structure, function, and status with improved image resolution relative to late arriving photons which have been diffusely scattered. Calculation of early photon arrival at a collector after transport through large tissue thicknesses is difficult, yet a comparison of predicted versus measured transmission is at the heart of imaging algorithms. The path integral description of light transport offers an approach toward such calculations. The method describes the movement of photons as particles undergoing collisions in a scattering medium based on the Brownian motion formalism of Feynman and Hibbs. This paper presents a basic introduction to the path integral description of photon transport and discusses the constrained classical path for describing the most probable path of a photon and the unconstrained classical path for describing the group path of an ensemble of photons.

Paper Details

Date Published: 18 August 1997
PDF: 12 pages
Proc. SPIE 2979, Optical Tomography and Spectroscopy of Tissue: Theory, Instrumentation, Model, and Human Studies II, (18 August 1997); doi: 10.1117/12.280283
Show Author Affiliations
Steven L. Jacques, Oregon Medical Laser Ctr. (United States)
Xujing Wang, Univ. of Texas M.D. Anderson Cancer Ctr. (United States)


Published in SPIE Proceedings Vol. 2979:
Optical Tomography and Spectroscopy of Tissue: Theory, Instrumentation, Model, and Human Studies II
Britton Chance; Robert R. Alfano, Editor(s)

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