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Journal of Biomedical Optics

Effects of titanium dioxide nanoparticles coupled with diode laser on optical properties of in vitro normal and cancerous human lung tissues studied with optical coherence tomography and diffuse reflectance spectra
Author(s): Lianpeng Zhou; Guoyong Wu; Huajiang Wei; Zhouyi Guo; Hongqin Yang; Yonghong He; Shusen Xie; Ying Liu; Qingan Meng
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Paper Abstract

The objective is to investigate the effects of two different sized (60 and 100 nm) titanium dioxide (TiO2) nanoparticles (NPs) penetration and accumulation in in vitro human normal lung (NL) tissue, lung squamous cell carcinoma (LSCC) tissue, and 650-nm diode laser-pretreated tissue on their optical properties studied with optical coherence tomography monitoring and diffuse reflectance (DR) spectra measurement. As with TiO2 NPs penetrating into the tissues, the intensities of DR of the samples increase, and then the enhancements of DR and the attenuation coefficients of the tissues were quantitatively calculated. The results suggest that 650-nm diode laser pretreatment increased the amounts of TiO2 NPs penetration and accumulation in NL and LSCC tissues, and the tissue optical properties were significantly influenced by accumulation of TiO2 NPs.

Paper Details

Date Published: 9 April 2015
PDF: 10 pages
J. Biomed. Opt. 20(4) 046003 doi: 10.1117/1.JBO.20.4.046003
Published in: Journal of Biomedical Optics Volume 20, Issue 4
Show Author Affiliations
Lianpeng Zhou, South China Normal Univ. (China)
Guoyong Wu, Sun Yat-Sen Univ. (China)
Huajiang Wei, South China Normal Univ. (China)
Zhouyi Guo, South China Normal Univ. (China)
Hongqin Yang, Fujian Normal Univ. (China)
Yonghong He, Graduate School at Shenzhen, Tsinghua Univ. (China)
Shusen Xie, Fujian Normal Univ. (China)
Ying Liu, South China Normal Univ. (China)
Qingan Meng, Southwest Institute of Technical Physics (China)

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