A theoretical study of the effect of optical properties in laser ablation of tissue

S. Rastegar, Massoud Motamedi, A. J. Welch, L. J. Hayes

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The role of optical properties in the distribution of laser light and the resulting thermodynamic processes in biological tissue is studied from a theoretical perspective. Light distribution is modeled by a discrete ordinate method and heat transfer and ablation is modeled by an immobilized finite element method. The effect of parametric variation of absorption, scattering, and scattering anisotropicity on the dynamics of the ablation process is examined. The manifestation of higher than the ablation threshold temperature in the subsurface tissue is observed and discussed. Results indicate significant differences in the ablation behavior which may have important clinical implications.

Original languageEnglish
Pages (from-to)1180-1187
Number of pages8
JournalIEEE Transactions on Biomedical Engineering
Issue number12
StatePublished - Dec 1989
Externally publishedYes


ASJC Scopus subject areas

  • Biomedical Engineering

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