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Proceedings Paper

Transport and diffusion calculations on MRI-generated data
Author(s): Andreas H. Hielscher; Raymond E. Alcouffe; Randall Locke Barbour
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Paper 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.

Paper Details

Date Published: 18 August 1997
PDF: 9 pages
Proc. SPIE 2979, Optical Tomography and Spectroscopy of Tissue: Theory, Instrumentation, Model, and Human Studies II, (18 August 1997); doi: 10.1117/12.280284
Show Author Affiliations
Andreas H. Hielscher, Los Alamos National Lab. (United States)
Raymond E. Alcouffe, Los Alamos National Lab. (United States)
Randall Locke Barbour, SUNY/Brooklyn (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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