Transport and diffusion calculations on MRI-generated data

Andreas H. Hielscher, Raymond E. Alcouffe, Randall L. Barbour

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

Abstract

In this study we analyze the limits of the diffusion approximation to the Boltzmann transport equation for photon propagation in the human brain. Two dimensional slices through the head are obtained with the method of magnetic resonance imaging (MRI). Based on these images we assign optical properties to different regions of the brain. A finite-difference transport/diffusion code is then used to calculate the fluence throughout the head. Differences between diffusion and transport calculations occur especially in void-like spaces and regions where the absorption coefficient is comparable to the reduced scattering coefficient.

Original languageEnglish (US)
Title of host publicationProceedings of Optical Tomography and Spectroscopy of Tissue: Theory, Instrumentation, Model and Human Studies II
Subtitle of host publicationProceedings of SPIE - The International Society for Optical Engineering
Pages500-508
Number of pages9
Volume2979
DOIs
StatePublished - 1997
EventProceedings of Optical Tomography and Spectroscopy of Tissue: Theory, Instrumentation, Model and Human Studies II - San Jose, CA, United States
Duration: Feb 9 1997Feb 12 1997

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
PublisherSPIE
ISSN (Print)0277-786X

Other

OtherProceedings of Optical Tomography and Spectroscopy of Tissue: Theory, Instrumentation, Model and Human Studies II
Country/TerritoryUnited States
CitySan Jose, CA
Period2/9/972/12/97

Keywords

  • Brain
  • Diffusion theory
  • Discrete ordinate
  • Finite difference
  • Magnetic resonance imaging
  • Photon propagation in tissues
  • Transport theory

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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