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Proceedings Paper

Finite element analysis of temperature-controlled laser coagulation of biological tissue
Author(s): Tami N. Fink; Sohi Rastegar; Steven L. Jacques; Frank K. Tittel
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Paper Abstract

Issues of coagulation control were considered by simulating a controlled surface temperature irradiation using thermal feedback to execute an appropriate temporal profile for laser power. In order to maintain a relatively `constant' temperature at the surface of the tissue, a non- uniform pulse sequence would be required. `Constant' surface temperature irradiation avoids high temperature effects, achieves relatively slow, steady progression of damage, allowing potential real-time monitoring and control of coagulation front position. Furthermore, the difference in damage depth prediction using a constant property model as compared with a temperature dependent optical property model is much less for a `constant' surface temperature irradiation than for a free running laser irradiation.

Paper Details

Date Published: 17 August 1994
PDF: 8 pages
Proc. SPIE 2134, Laser-Tissue Interaction V; and Ultraviolet Radiation Hazards, (17 August 1994); doi: 10.1117/12.182958
Show Author Affiliations
Tami N. Fink, Rice Univ. (United States)
Sohi Rastegar, Texas A&M Univ. (United States)
Steven L. Jacques, Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
Frank K. Tittel, Rice Univ. (United States)


Published in SPIE Proceedings Vol. 2134:
Laser-Tissue Interaction V; and Ultraviolet Radiation Hazards
Steven L. Jacques; David H. Sliney; Michael Belkin M.D., Editor(s)

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