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Proceedings Paper

Optical properties of human pulmonary artery tissue at Ti:Sapphire laser using inverse adding-doubling method in vitro
Author(s): Huajiang Wei; Da Xing; Guoyong Wu; Huaiming Gu; Jianjun Lu; Ying Jin
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Paper Abstract

The purpose of present study is to determine and compare the optical properties of normal human pulmonary artery tissue in vitro at 650, 680, 710, 740, 780 nm wavelengths of Ti:Sapphire laser. The optical parameters of tissue samples were determined using a double integrating sphere set-up. The inverse Adding-doubling method was used to determine the optical properties from the measurements. The results of measurement showed that the absorption coefficients for pulmonary arteries increase with increase of laser wavelength, the maximum absorption coefficient is 0.277 mm-1 at 780 nm, and the minimum absorption coefficient is 0.160 mm-1 at 650nm, and the reduced scattering coefficients for pulmonary arteries increase with decrease of laser wavelength, the maximum reduced scattering coefficient is 48.8 mm-1 at 650 urn, and the minimum reduced scattering coefficient is 13.3 mm-1 at 780 nm. The optical penetration depths for pulmonary arteries increase with increase of laser wavelength, the maximum optical penetration depth is 0.298 mm at 780 nm, and the minimum optical penetration depth is 0.206 mm at 650 nm. The backscattered reflectances for normal human pulmonary arteries increase with decrease of laser wavelength, the maximum backscattered reflectance is 0.794 at 650 nm, and the minimum backscattered reflectance is 0.561 at 780 nm.

Paper Details

Date Published: 27 October 2006
PDF: 6 pages
Proc. SPIE 6047, Fourth International Conference on Photonics and Imaging in Biology and Medicine, 60471X (27 October 2006); doi: 10.1117/12.710909
Show Author Affiliations
Huajiang Wei, South China Normal Univ. (China)
Da Xing, South China Normal Univ. (China)
Guoyong Wu, First Affiliated Hospital of Zhongshan Univ. (China)
Huaiming Gu, South China Normal Univ. (China)
Jianjun Lu, First Affiliated Hospital of Zhongshan Univ. (China)
Ying Jin, South China Normal Univ. (China)


Published in SPIE Proceedings Vol. 6047:
Fourth International Conference on Photonics and Imaging in Biology and Medicine
Kexin Xu; Qingming Luo; Da Xing; Alexander V. Priezzhev; Valery V. Tuchin, Editor(s)

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