Coupled light transport-heat diffusion model for laser dosimetiy with dynamic optical properties

Richard A. London, Michael E. Glinsky, George B. Zimmerman, David C. Eder, Steven L. Jacques

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations

Abstract

The effect of dynamic optical properties on the spatial distribution of light in laser therapy is studied via numerical simulations. A two-dimensional, time dependent computer program called LATIS is used. Laser light transport is simulated with a Monte Carlo technique including anisotropic scattering and absorption. Thermal heat transport is calculated with a finite difference algorithm. Material properties are specified on a 2-D mesh and can be arbitrary functions of space and time. Arrhenius rate equations are solved for tissue damage caused by elevated temperatures. Optical properties are functions of tissue damage, as determined by previous measurements. Results are presented for the time variation of the the light distribution and damage within the tissue as the optical properties of the tissue are altered.

Original languageEnglish (US)
Pages (from-to)434-442
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume2391
DOIs
StatePublished - May 22 1995
EventLaser-Tissue Interaction VI 1995 - San Jose, United States
Duration: Feb 1 1995Feb 8 1995

Keywords

  • Dynamic optics
  • Laser dosimetry
  • Laser-tissue modeling
  • Tissue damage

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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