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Optical Engineering

Model simulation of biological damage in tissue exposed to CO2 laser irradiation
Author(s): Miron Gerstmann; A. M. Sagi-Dolev; Ariella Avidor-Zehavi; Abraham Katzir; Solange Akselrod
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Paper Abstract

A model that predicts temperature fields in C02-laser-irradiated tissue is applied in search of the optimal irradiation conditions or the general purpose of soft tissue removal. In a series of single pulse simulations and pulse train simulations the effect of parameters such as pulse durations, irradiance during a pulse, and the repetition rate of pulses are studied. The simulations are carried out for two basic beam profiles: Gaussian and rectangular. As a result, a range of preferred values for each parameter is obtained. The rectangular profile exhibits a far better behavior in the sense that lateral thermal damage is highly reduced compared to the Gaussian profile. Ablation thresholds and efficiencies are calculated for both profiles as a by-product. Results are in good agreement with other reported studies.

Paper Details

Date Published: 1 February 1993
PDF: 7 pages
Opt. Eng. 32(2) doi: 10.1117/12.60699
Published in: Optical Engineering Volume 32, Issue 2
Show Author Affiliations
Miron Gerstmann, Tel Aviv Univ. (Israel)
A. M. Sagi-Dolev, Tel Aviv Univ. (Israel)
Ariella Avidor-Zehavi, Tel Aviv Univ. (Israel)
Abraham Katzir, Tel Aviv Univ. (Israel)
Solange Akselrod, Tel Aviv Univ. (Israel)

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