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

作者：Zhou Lianpeng; Wu Guoyong; Wei Huajiang^*; Guo Zhouyi; Yang Hongqin; He Yonghong; Xie Shusen; Liu Ying; Meng Qingan

来源：Journal of Biomedical Optics, 2015, 20(4): 046003.

DOI：10.1117/1.JBO.20.4.046003

• titanium dioxide nanoparticle
• accumulation
• laser
• optical coherence tomography
• diffuse reflectance spectra

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.

• 单位
  中山大学; 华南师范大学; 核工业西南物理研究院; 1; 福建师范大学; 清华大学深圳研究生院