Share Email Print
cover

Proceedings Paper

Modeling the thermal response of porcine cartilage to laser irradiation
Author(s): Sergio H. Diaz-Valdes; Guillermo Aguilar; Reshmi Basu; Enrique J. Lavernia; Brian Jet-Fei Wong
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Cartilage laser thermoforming, also known as laser reshaping, is a new surgical procedure that allows in-situ treatment of deformities in the head and neck with less morbidity than traditional approaches. During laser irradiation, cartilage becomes sufficiently subtle or deformable for stretching and shaping into new stable configurations. This study describes the experimental and theoretical characterization of the thermal response of porcine cartilage to laser irradiation (Nd:YAG). The surface temperature history of cartilage specimens was monitored during heating and thermal relaxation; using laser exposure times ranging between 1 and 15 s and laser powers of 1 to 10 W. The experimental results were then used to validate a finite element model, which accounts for heat diffusion, light propagation in tissue, and heat loss due to water evaporation. The simultaneous solution of the energy and mass diffusion equations resulted in predictions of temperature distribution in cartilage that were in good agreement with experiments. The model simulations will provide insights to the relationship between the laser treatment parameters (exposure time, laser beam diameter, and power) and the onset of new molecular arrangements and cell thermal injury in the material, thus conceiving basic guidelines of laser thermoforming.

Paper Details

Date Published: 27 June 2002
PDF: 10 pages
Proc. SPIE 4617, Laser Tissue Interaction XIII: Photochemical, Photothermal, and Photomechanical, (27 June 2002); doi: 10.1117/12.472507
Show Author Affiliations
Sergio H. Diaz-Valdes, Beckman Laser Institute and Medical Clinic (United States)
Guillermo Aguilar, Beckman Laser Institute and Medical Clinic and Univ. of California/Irvine (United States)
Reshmi Basu, Beckman Laser Institute and Medical Clinic (United States)
Enrique J. Lavernia, Univ. of California/Irvine (United States)
Brian Jet-Fei Wong, Beckman Laser Institute and Medical Clinic (United States)


Published in SPIE Proceedings Vol. 4617:
Laser Tissue Interaction XIII: Photochemical, Photothermal, and Photomechanical
Steven L. Jacques; Donald Dean Duncan; Sean J. Kirkpatrick; Andres Kriete; Donald Dean Duncan; Sean J. Kirkpatrick; Andres Kriete, Editor(s)

© SPIE. Terms of Use
Back to Top