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Proceedings Paper

Potential role of collagen in optical behavior of arterial tissue during laser irradiation
Author(s): Ramtin Agah; Massoud Motamedi; Praveen Dalmia; Emile Ettedgui; Liang Song; J. Richard Spears
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Paper 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.

Paper Details

Date Published: 1 June 1990
PDF: 7 pages
Proc. SPIE 1202, Laser-Tissue Interaction, (1 June 1990); doi: 10.1117/12.17633
Show Author Affiliations
Ramtin Agah, Univ. of Texas Southwestern Medical School (United States)
Massoud Motamedi, Wayne State Univ. School of Medicine (United States)
Praveen Dalmia, Wayne State Univ. School of Medicine (United States)
Emile Ettedgui, Wayne State Univ. School of Medicine (United States)
Liang Song, Wayne State Univ. School of Medicine (United States)
J. Richard Spears, Wayne State Univ. School of Medicine (United States)


Published in SPIE Proceedings Vol. 1202:
Laser-Tissue Interaction
Steven L. Jacques, Editor(s)

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