Modeling infrared temperature measurements: comparison of experimental results with simulations

Bernard Choi; John Anthony Pearce; Ashley J. Welch

doi:10.1117/12.388021

13 June 2000 Modeling infrared temperature measurements: comparison of experimental results with simulations

Bernard Choi, John Anthony Pearce, Ashley J. Welch

Proceedings Volume 3914, Laser-Tissue Interaction XI: Photochemical, Photothermal, and Photomechanical; (2000) https://doi.org/10.1117/12.388021
Event: BiOS 2000 The International Symposium on Biomedical Optics, 2000, San Jose, CA, United States

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.

Citation Download Citation

Bernard Choi, John Anthony Pearce, and Ashley J. Welch "Modeling infrared temperature measurements: comparison of experimental results with simulations", Proc. SPIE 3914, Laser-Tissue Interaction XI: Photochemical, Photothermal, and Photomechanical, (13 June 2000); https://doi.org/10.1117/12.388021

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