Changes in the optical properties of laser-coagulated and thermally coagulated bovine myocardium

Hans-Joachim Schwarzmaier M.D.; Anna N. Yaroslavsky; Albert Terenji; Stefan Willmann; Ilya V. Yaroslavsky; Thomas Kahn M.D.

doi:10.1117/12.308186

13 May 1998 Changes in the optical properties of laser-coagulated and thermally coagulated bovine myocardium

Hans-Joachim Schwarzmaier M.D., Anna N. Yaroslavsky, Albert Terenji, Stefan Willmann, Ilya V. Yaroslavsky, Thomas Kahn M.D.

Author Affiliations +

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.

Citation Download Citation

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

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available