Effect of optical clearing agents on the in vivo optical properties of squamous epithelial tissue.

Journal Article (Journal Article)

BACKGROUND AND OBJECTIVES: Optical clearing agents (OCAs) have previously been shown to increase depth penetration within turbid tissue ex vivo. This paper quantifies tissue optical properties of the hamster cheek pouch model in order to provide a means to assess the effect of OCAs quantitatively in vivo. STUDY DESIGN/MATERIALS AND METHODS: Diffuse reflectance spectra were obtained from both cheeks of 12 hamsters before and after immersion in dimethyl sulfoxide (DMSO), glycerol or a phosphate buffer saline (PBS) control for 20 minutes. A Monte Carlo model was then utilized to derive the wavelength dependent reduced scattering and absorption coefficients. RESULTS: DMSO caused a statistically significant decrease in the absorption and reduced scattering coefficients derived by the model. Glycerol caused a statistically significant increase in the wavelength dependent absorption coefficient, but no statistically significant changes in the reduced scattering coefficient. CONCLUSIONS: DMSO and glycerol act upon tissues differently as reflected by the tissue optical properties, implying that not all OCAs are equally effective in optically clearing tissues.

Full Text

Duke Authors

Cited Authors

  • Millon, SR; Roldan-Perez, KM; Riching, KM; Palmer, GM; Ramanujam, N

Published Date

  • December 2006

Published In

Volume / Issue

  • 38 / 10

Start / End Page

  • 920 - 927

PubMed ID

  • 17163473

International Standard Serial Number (ISSN)

  • 0196-8092

Digital Object Identifier (DOI)

  • 10.1002/lsm.20451


  • eng

Conference Location

  • United States