Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1990),
  • paper CFK2

Thermal modeling

Not Accessible

Your library or personal account may give you access

Abstract

The local absorption of laser light generates heat that is conducted to cooler regions of the tissue. The rate of heat generation at a point r is equal to the fluence rate at r times the local absorption coefficient μa (r)(m−1). When light scattering dominates absorption, a solution to the transport equation is necessary to compute the fluence rate Φ(r) (W/m2). Typically, 3-D diffusion approximation or Monte Carlo models are employed to describe the propagation of light in tissue. Once the rate of heat generation S(r) (W/m3) has been determined, the transient temperature field is computed using a numerical solution of the heat conduction equation. The extent of thermal damage (coagulation) is estimated with a temperature-time-dependent rate process equation. These linear models provide reasonable predictions of the thermal response of laser irradiated tissue when the optical, thermal, and rate coefficients of the tissue are known.

© 1990 Optical Society of America

PDF Article
More Like This
Laser-induced heating and thermal propagation: a model of tissue interaction with light

LOU REINISCH
TUR4 Conference on Lasers and Electro-Optics (CLEO:S&I) 1989

FEM modeling and histological analyses on thermal damage induced in facial skin resurfacing procedure with different CO2 laser pulse duration

Francesca Rossi, Tiziano Zingoni, Emiliano Di Cicco, Leonardo Manetti, Roberto Pini, and Damiano Fortuna
80921Q European Conference on Biomedical Optics (ECBO) 2011

General Analytical Model for the Thermal Effects in High-Power Solid-State Lasers

Th. Graf, M. Schmid, and H. P. Weber
CWB3 The European Conference on Lasers and Electro-Optics (CLEO/Europe) 2000

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved