Modeling photon propagation in anisotropically scattering media with the equation of radiative transfer

Alexander D. Klose, Andreas H. Hielscher

    Research output: Contribution to journalConference articlepeer-review


    The equation of radiative transfer can take into account the anisotropic scattering behavior of photons and anisotropic sources for modeling the light propagation in tissue. This is an important aspect when small tissue geometries are considered. In this case the solutions of the commonly applied diffusion approximation may provide only insufficiently accurate results. We numerically solve the equation of radiative transfer by means of a finite-difference discrete-ordinates technique. However, strong anisotropically scattering media require many discrete ordinates, which lead to a large computational burden. In this study we implemented a Delta-Eddington method that allows using only a small number of discrete ordinates, and the solution can be obtained at a lesser computational costs.

    Original languageEnglish (US)
    Pages (from-to)624-633
    Number of pages10
    JournalProceedings of SPIE - The International Society for Optical Engineering
    StatePublished - 2003
    EventPROGRESS IN BIOMEDICAL OPTICS AND IMAGING: Optical Tomography and Spectroscopy of Tissue V - San Jose, CA, United States
    Duration: Jan 26 2003Jan 29 2003


    • Anisotropic scattering
    • Anisotropic source
    • Delta-Eddington method
    • Discrete-ordinates method
    • Equation of radiative transfer
    • Phase function
    • Tissue optics

    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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