Finite element analysis of temperature-controlled laser coagulation of biological tissue

Tami N. Glenn; Sohi Rastegar; Steve L. Jacques; Frank Tittel

doi:10.1117/12.182958

Finite element analysis of temperature-controlled laser coagulation of biological tissue

Tami N. Glenn, Sohi Rastegar, Steve L. Jacques, Frank Tittel

Research output: Contribution to journal › Conference article › peer-review

4 Scopus citations

Abstract

Issues of coagulation control were considered by simulating a controlled surface temperature irradiation using thermal feedback to execute an appropriate temporal proffle for laser power. In order to maintain a relatively 'constant' temperature at the surface of the tissue, a nonuniform 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.

Original language	English (US)
Article number	1342
Pages (from-to)	383-390
Number of pages	8
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	2134
DOIs	https://doi.org/10.1117/12.182958
State	Published - Aug 17 1994
Externally published	Yes
Event	Laser-Tissue Interaction V; and Ultraviolet Radiation Hazards 1994 - Los Angeles, United States Duration: Jan 23 1994 → Jan 29 1994

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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title = "Finite element analysis of temperature-controlled laser coagulation of biological tissue",

abstract = "Issues of coagulation control were considered by simulating a controlled surface temperature irradiation using thermal feedback to execute an appropriate temporal proffle for laser power. In order to maintain a relatively 'constant' temperature at the surface of the tissue, a nonuniform 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.",

author = "Glenn, {Tami N.} and Sohi Rastegar and Jacques, {Steve L.} and Frank Tittel",

note = "Publisher Copyright: {\textcopyright} 1994 Proceedings of SPIE - The International Society for Optical Engineering. All rights reserved.; Laser-Tissue Interaction V; and Ultraviolet Radiation Hazards 1994 ; Conference date: 23-01-1994 Through 29-01-1994",

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AU - Glenn, Tami N.

AU - Rastegar, Sohi

AU - Jacques, Steve L.

AU - Tittel, Frank

PY - 1994/8/17

Y1 - 1994/8/17

N2 - Issues of coagulation control were considered by simulating a controlled surface temperature irradiation using thermal feedback to execute an appropriate temporal proffle for laser power. In order to maintain a relatively 'constant' temperature at the surface of the tissue, a nonuniform 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.

AB - Issues of coagulation control were considered by simulating a controlled surface temperature irradiation using thermal feedback to execute an appropriate temporal proffle for laser power. In order to maintain a relatively 'constant' temperature at the surface of the tissue, a nonuniform 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.

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JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

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T2 - Laser-Tissue Interaction V; and Ultraviolet Radiation Hazards 1994

Y2 - 23 January 1994 through 29 January 1994

ER -

Finite element analysis of temperature-controlled laser coagulation of biological tissue

Abstract

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