Adaptive bin sizing in Monte Carlo modeling of light transport in tissue

Steven A. Schafer

doi:10.1117/12.239589

7 May 1996 Adaptive bin sizing in Monte Carlo modeling of light transport in tissue

Steven A. Schafer

Proceedings Volume 2681, Laser-Tissue Interaction VII; (1996) https://doi.org/10.1117/12.239589
Event: Photonics West '96, 1996, San Jose, CA, United States

Abstract

For high-accuracy modeling of light propagation in biological tissue, the Monte Carlo method is currently the best tool in our arsenal. Its principal drawbacks include relatively slow convergence and, in the case of 3D problems, prohibitive computer memory requirements. Furthermore, in most problems, the number of iterations required to obtain satisfactory convergence varies substantially with distance from the light source; obtaining useful information at large distances from the light source requires that we generate more data than needed at smaller distances. We will present our work on an adaptive technique, which trades off spatial resolution in regions of low light intensity against the two aforementioned drawbacks to generate an `optimal' intensity map from the available data. With this technique, memory requirements scale with the degree of detail required, and not with the physical size or dimensionality of the problem. The reduced memory requirements make 3D problems tractable, and because the technique is adaptive, a generic approach is applicable to virtually any problem, without need to tailor the program to particular geometries.

Citation Download Citation

Steven A. Schafer "Adaptive bin sizing in Monte Carlo modeling of light transport in tissue", Proc. SPIE 2681, Laser-Tissue Interaction VII, (7 May 1996); https://doi.org/10.1117/12.239589

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KEYWORDS

Monte Carlo methods

Scattering

Tissue optics

Photon transport

Spatial resolution

Light scattering

3D modeling

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