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

Ramtin Agah, Massoud Motamedi, Praveen Dalmia, Emile Ettedgui, Leon Song, J. Richard Spears

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Scopus citations

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 nm (reflection measurements only). The results from three of the wavelengths (1060nm, 633nm, and 514 nm) were used with a Delta-Eddington diffusion approximation model1,2 to calculate absorption coefficients, μa, and effective scattering coefficients, μs, of the normal and thermally coagulated aorta at these wavelengths. The results show a strong wavelength dependency of irreversible changes in optical properties of thermally damaged aorta, with a trend of increasing changes in reflection approaching smaller wavelengths.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsSteven L. Jacques
PublisherPubl by Int Soc for Optical Engineering
Pages246-252
Number of pages7
ISBN (Print)0819402435
StatePublished - Dec 1 1990
EventProceedings of Laser-Tissue Interaction - Los Angeles, CA, USA
Duration: Jan 15 1990Jan 17 1990

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume1202
ISSN (Print)0277-786X

Other

OtherProceedings of Laser-Tissue Interaction
CityLos Angeles, CA, USA
Period1/15/901/17/90

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Agah, R., Motamedi, M., Dalmia, P., Ettedgui, E., Song, L., & Spears, J. R. (1990). Potential role of collagen in optical behaviour of arterial tissue during laser irradiation. In S. L. Jacques (Ed.), Proceedings of SPIE - The International Society for Optical Engineering (pp. 246-252). (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 1202). Publ by Int Soc for Optical Engineering.