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

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
Editors	Steven L. Jacques
Pages	102-113
Number of pages	12
State	Published - Jan 1 1996
Externally published	Yes
Event	Laser-Tissue Interaction VII - San Jose, CA, USA Duration: Jan 29 1996 → Feb 1 1996

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	2681

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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Chan, E. K., Amini, B., Barton, J., Welch, A. J., Thomsen, S. L. M. D., Stoneman, R. C., & Esterowitz, L. (1996). Wavelength dependency of soft tissue coagulation with a tunable cw laser. In S. L. Jacques (Ed.), Proceedings of SPIE - The International Society for Optical Engineering (pp. 102-113). (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 2681).

Wavelength dependency of soft tissue coagulation with a tunable cw laser. / Chan, Eric K.; Amini, Behrang; Barton, Jennifer; Welch, Ashley J.; Thomsen, Sharon L.M.D.; Stoneman, Robert C.; Esterowitz, Leon.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / Steven L. Jacques. 1996. p. 102-113 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 2681).

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

Chan, EK, Amini, B, Barton, J, Welch, AJ, Thomsen, SLMD, Stoneman, RC & Esterowitz, L 1996, Wavelength dependency of soft tissue coagulation with a tunable cw laser. in SL Jacques (ed.), Proceedings of SPIE - The International Society for Optical Engineering. Proceedings of SPIE - The International Society for Optical Engineering, vol. 2681, pp. 102-113, Laser-Tissue Interaction VII, San Jose, CA, USA, 1/29/96.

Chan, Eric K. ; Amini, Behrang ; Barton, Jennifer ; Welch, Ashley J. ; Thomsen, Sharon L.M.D. ; Stoneman, Robert C. ; Esterowitz, Leon. / Wavelength dependency of soft tissue coagulation with a tunable cw laser. Proceedings of SPIE - The International Society for Optical Engineering. editor / Steven L. Jacques. 1996. pp. 102-113 (Proceedings of SPIE - The International Society for Optical Engineering).

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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.",

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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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