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Proceedings Paper

Changes in the optical properties of laser-coagulated and thermally coagulated bovine myocardium
Author(s): Hans-Joachim Schwarzmaier M.D.; Anna N. Yaroslavsky; Albert Terenji; Stefan Willmann; Ilya V. Yaroslavsky; Thomas Kahn M.D.
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Paper 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.

Paper Details

Date Published: 13 May 1998
PDF: 5 pages
Proc. SPIE 3254, Laser-Tissue Interaction IX, (13 May 1998); doi: 10.1117/12.308186
Show Author Affiliations
Hans-Joachim Schwarzmaier M.D., German National Research Ctr. for Information Technology (Germany)
Anna N. Yaroslavsky, Heinrich-Heine-Univ. (United States)
Albert Terenji, Heinrich-Heine-Univ. (Germany)
Stefan Willmann, Heinrich-Heine-Univ. (Germany)
Ilya V. Yaroslavsky, Heinrich-Heine-Univ. (United States)
Thomas Kahn M.D., Heinrich-Heine-Univ. (Germany)

Published in SPIE Proceedings Vol. 3254:
Laser-Tissue Interaction IX
Steven L. Jacques; Jeff Lotz, Editor(s)

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