Wavelength dependency of soft tissue coagulation with a tunable cw laser

Eric K. Chan; Behrang Amini; Jennifer Barton; Ashley J. Welch; Sharon L.M.D. Thomsen; Robert C. Stoneman; Leon Esterowitz

doi:10.1117/12.239561

Wavelength dependency of soft tissue coagulation with a tunable cw laser

Eric K. Chan, Behrang Amini, Jennifer Barton, Ashley J. Welch, Sharon L.M.D. Thomsen, Robert C. Stoneman, Leon Esterowitz

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

A CW Tm:YAG laser with a tuning range from 1.86 to 2.08 μm was used to create thermal lesions on chicken breast, calf liver, and porcine cornea. All tissue types were exposed to a constant irradiance (450 mW, 0.92 mm spot diameter, 0.5 and 1.0 second exposures) at five different wavelengths about the 2 μm water absorption peak. We estimated tissue absorption coefficients from the thermal history recorded by a 8 - 12 μm thermal camera. Our data confirmed that the absorption of all tissue types tested followed the water absorption curve. The effect of these differences in absorption upon the coagulation lesion size was evaluated by histologic measurements.

Original language	English (US)
Title of host publication	Proceedings of SPIE - The International Society for Optical Engineering
Pages	102-113
Number of pages	12
Volume	2681
DOIs	https://doi.org/10.1117/12.239561
State	Published - 1996
Externally published	Yes
Event	Laser-Tissue Interaction VII - San Jose, CA, USA Duration: Jan 29 1996 → Feb 1 1996

Other

Other	Laser-Tissue Interaction VII
City	San Jose, CA, USA
Period	1/29/96 → 2/1/96

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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10.1117/12.239561

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@inproceedings{aca8a6a48e314d5caf9091db8eca1bfe,

title = "Wavelength dependency of soft tissue coagulation with a tunable cw laser",

abstract = "A CW Tm:YAG laser with a tuning range from 1.86 to 2.08 μm was used to create thermal lesions on chicken breast, calf liver, and porcine cornea. All tissue types were exposed to a constant irradiance (450 mW, 0.92 mm spot diameter, 0.5 and 1.0 second exposures) at five different wavelengths about the 2 μm water absorption peak. We estimated tissue absorption coefficients from the thermal history recorded by a 8 - 12 μm thermal camera. Our data confirmed that the absorption of all tissue types tested followed the water absorption curve. The effect of these differences in absorption upon the coagulation lesion size was evaluated by histologic measurements.",

author = "Chan, {Eric K.} and Behrang Amini and Jennifer Barton and Welch, {Ashley J.} and Thomsen, {Sharon L.M.D.} and Stoneman, {Robert C.} and Leon Esterowitz",

year = "1996",

doi = "10.1117/12.239561",

language = "English (US)",

isbn = "0819420557",

volume = "2681",

pages = "102--113",

booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",

}

TY - GEN

T1 - Wavelength dependency of soft tissue coagulation with a tunable cw laser

AU - Chan, Eric K.

AU - Amini, Behrang

AU - Barton, Jennifer

AU - Welch, Ashley J.

AU - Thomsen, Sharon L.M.D.

AU - Stoneman, Robert C.

AU - Esterowitz, Leon

PY - 1996

Y1 - 1996

N2 - A CW Tm:YAG laser with a tuning range from 1.86 to 2.08 μm was used to create thermal lesions on chicken breast, calf liver, and porcine cornea. All tissue types were exposed to a constant irradiance (450 mW, 0.92 mm spot diameter, 0.5 and 1.0 second exposures) at five different wavelengths about the 2 μm water absorption peak. We estimated tissue absorption coefficients from the thermal history recorded by a 8 - 12 μm thermal camera. Our data confirmed that the absorption of all tissue types tested followed the water absorption curve. The effect of these differences in absorption upon the coagulation lesion size was evaluated by histologic measurements.

AB - A CW Tm:YAG laser with a tuning range from 1.86 to 2.08 μm was used to create thermal lesions on chicken breast, calf liver, and porcine cornea. All tissue types were exposed to a constant irradiance (450 mW, 0.92 mm spot diameter, 0.5 and 1.0 second exposures) at five different wavelengths about the 2 μm water absorption peak. We estimated tissue absorption coefficients from the thermal history recorded by a 8 - 12 μm thermal camera. Our data confirmed that the absorption of all tissue types tested followed the water absorption curve. The effect of these differences in absorption upon the coagulation lesion size was evaluated by histologic measurements.

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U2 - 10.1117/12.239561

DO - 10.1117/12.239561

M3 - Conference contribution

AN - SCOPUS:0029765905

SN - 0819420557

SN - 9780819420558

VL - 2681

SP - 102

EP - 113

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

T2 - Laser-Tissue Interaction VII

Y2 - 29 January 1996 through 1 February 1996

ER -

Wavelength dependency of soft tissue coagulation with a tunable cw laser

Abstract

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