Potential role of collagen in optical behavior of arterial tissue during laser irradiation

Ramtin Agah; Massoud Motamedi; Praveen Dalmia; Emile Ettedgui; Liang Song; J. Richard Spears M.D.

doi:10.1117/12.17633

1 June 1990 Potential role of collagen in optical behavior of arterial tissue during laser irradiation

Ramtin Agah, Massoud Motamedi, Praveen Dalmia, Emile Ettedgui, Liang Song, J. Richard Spears M.D.

Proceedings Volume 1202, Laser-Tissue Interaction; (1990) https://doi.org/10.1117/12.17633
Event: OE/LASE '90, 1990, Los Angeles, CA, United States

Abstract

The optical properties diffuse reflection and transmission of normal porcine aorta and thermally coagulated aorta were measured using low power laser irradiation at 1060 nm, 633 nm, 514 nm, and 325 nrn (reflection measurements only). The results from three of the wavelengths (1060 nm, 633 nm, and 514 nm) were used with a Delta-Eddington diffusion approximation model12 to calculate absorption coefficients, j.ta, and effective scattering coefficients, j.ts, of the normal and thermally coagulated aorta at these wavelengths. The results show a strong wavelength dependency of irreversible changes in optical properties of thennally damaged aorta, with a trend of increasing changes in reflection approaching smaller wavelengths.

Citation Download Citation

Ramtin Agah, Massoud Motamedi, Praveen Dalmia, Emile Ettedgui, Liang Song, and J. Richard Spears M.D. "Potential role of collagen in optical behavior of arterial tissue during laser irradiation", Proc. SPIE 1202, Laser-Tissue Interaction, (1 June 1990); https://doi.org/10.1117/12.17633

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