Discrete-Ordinate Transport Simulations of Light Propagation in Highly Forward Scattering Heterogeneous Media

Andreas H. Hielscher, Raymond E. Alcouffe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We implemented a delta-Eddington scheme in conjunction with a finite-difference, discrete-ordinate, radiative-transport code to accurately and efficiently simulate light propagation in highly-forward-scattering media. It is demonstrated that light propagation does only weakly depend on the anisotropy factor, g, as long as the reduced scattering coefficient, µs', is much larger than the absorption coefficient, µa. When µa - µs', the fluence rate decays faster in media with high g-values compared to isotropically scattering (g = 0) media. In heterogeneous media that contain void-like spaces, such as the cerebrospinal-fluid-filled ventricles in the brain, the choice of g barely affects the predicted light propagation. However, the diffusion approximation does not yield an accurate description of the light transport in these cases.

Original languageEnglish (US)
Title of host publicationAdvances in Optical Imaging and Photon Migration, AOIPM 1998
PublisherOptica Publishing Group (formerly OSA)
Pages23-28
Number of pages6
ISBN (Electronic)1557525463
StatePublished - 1998
EventAdvances in Optical Imaging and Photon Migration, AOIPM 1998 - Orlando, United States
Duration: Mar 8 1998 → …

Publication series

NameOptics InfoBase Conference Papers

Conference

ConferenceAdvances in Optical Imaging and Photon Migration, AOIPM 1998
Country/TerritoryUnited States
CityOrlando
Period3/8/98 → …

Keywords

  • (170.3660) Light propagation in tissues
  • 170.5280 Photon migration
  • 170.7050 Turbid media

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Mechanics of Materials

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