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13 May 1998 Changes in the optical properties of laser-coagulated and thermally coagulated bovine myocardium
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Proceedings Volume 3254, Laser-Tissue Interaction IX; (1998) https://doi.org/10.1117/12.308186
Event: BiOS '98 International Biomedical Optics Symposium, 1998, San Jose, CA, United States
Abstract
The optical properties of seven native, seven laser-coagulated (Nd:YAG (lambda) equals 1064 nm, 11 W, 15 min, T less than or equal to 90 degrees Celsius), and seven thermally coagulated (60 min, T less than or equal to 80 degrees Celsius) samples of bovine myocardium were determined. The absorption coefficient (mu) a, the scattering coefficient (mu) s, and the anisotropy factor g were obtained in the spectral range from 1000 nm to 1500 nm from double integrating sphere measurements using an inverse Monte Carlo technique. The results indicate that both, laser coagulation and thermal coagulation increase the (mu) a and (mu) s values by a factor of 2 and 4, respectively, while g is not significantly changed. Conclusion: Thermal denaturation leads to significant changes in the optical properties of bovine myocardium. The changes are comparable to those induced by laser coagulation.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hans-Joachim Schwarzmaier M.D., Anna N. Yaroslavsky, Albert Terenji, Stefan Willmann, Ilya V. Yaroslavsky, and Thomas Kahn M.D. "Changes in the optical properties of laser-coagulated and thermally coagulated bovine myocardium", Proc. SPIE 3254, Laser-Tissue Interaction IX, (13 May 1998); https://doi.org/10.1117/12.308186
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