Transport and diffusion calculations on MRI-generated data

Andreas H. Hielscher; Raymond E. Alcouffe; Randall Locke Barbour

doi:10.1117/12.280284

18 August 1997 Transport and diffusion calculations on MRI-generated data

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

Proceedings Volume 2979, Optical Tomography and Spectroscopy of Tissue: Theory, Instrumentation, Model, and Human Studies II; (1997) https://doi.org/10.1117/12.280284
Event: BiOS '97, Part of Photonics West, 1997, San Jose, CA, United States

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.

Citation Download Citation

Andreas H. Hielscher, Raymond E. Alcouffe, and Randall Locke Barbour "Transport and diffusion calculations on MRI-generated data", Proc. SPIE 2979, Optical Tomography and Spectroscopy of Tissue: Theory, Instrumentation, Model, and Human Studies II, (18 August 1997); https://doi.org/10.1117/12.280284

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