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Proceedings Paper

Modeling infrared temperature measurements: comparison of experimental results with simulations
Author(s): Bernard Choi; John Anthony Pearce; Ashley J. Welch
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Paper Abstract

Infrared cameras have been used to monitor the thermal response of tissue to pulsed and continuous wave laser irradiation. A computer model has been developed previously to predict radiometric temperature estimations and demonstrate potential discrepancies between surface and radiometric temperatures. To quantitatively verify the modeling, experiments were performed in which gelatin phantoms (approximately 98% water) were irradiated with low-radiant- exposure (e.g. subablative) CO2 laser pulses. Radiometric temperatures were estimated using a 3 - 5 micrometer band- limited thermal camera and compared to computer model predictions of the measured temperatures. By fitting model calculations to measured data, theoretical surface temperatures were determined as a function of time and the onset of nonlinear changes in the thermal response of tissue identified.

Paper Details

Date Published: 13 June 2000
PDF: 6 pages
Proc. SPIE 3914, Laser-Tissue Interaction XI: Photochemical, Photothermal, and Photomechanical, (13 June 2000); doi: 10.1117/12.388021
Show Author Affiliations
Bernard Choi, Univ. of Texas/Austin (United States)
John Anthony Pearce, Univ. of Texas/Austin (United States)
Ashley J. Welch, Univ. of Texas/Austin (United States)

Published in SPIE Proceedings Vol. 3914:
Laser-Tissue Interaction XI: Photochemical, Photothermal, and Photomechanical
Jeffrey O. Hollinger; Donald Dean Duncan; Jeffrey O. Hollinger; Donald Dean Duncan; Steven L. Jacques, Editor(s)

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