Assessment of tissue optical clearing as a function of glucose concentration using optical coherence tomography

Narendran Sudheendran, Mohamed Mohamed, Mohamad G. Ghosn, Valery V. Tuchin, Kirill V. Larin

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

One of the major challenges in imaging biological tissues using optical techniques, such as optical coherence tomography (OCT), is the lack of light penetration due to highly turbid structures within the tissue. Optical clearing techniques enable the biological samples to be more optically homogeneous, allowing for deeper penetration of light into the tissue. This study investigates the effect of optical clearing utilizing various concentrations of glucose solution (10%, 30%, and 50%) on porcine skin. A gold-plated mirror was imaged beneath the tissue and percentage clearing was determined by monitoring the change in reflected light intensity from the mirror over time. The ratio of percentage clearing per tissue thickness for 10%, 30% and 50% glucose was determined to be 4.7 ±1.6% mm-1 (n = 6), 10.6 ±2.0% mm-1 (n = 7) and 21.8 ±2.2% mm-1 (n = 5), respectively. It was concluded that while higher glucose concentration has the highest optical clearing effect, a suitable concentration should be chosen for the purpose of clearing, considering the osmotic stress on the tissue sample.

Original languageEnglish (US)
Pages (from-to)169-176
Number of pages8
JournalJournal of Innovative Optical Health Sciences
Volume3
Issue number3
DOIs
StatePublished - Jul 2010

Keywords

  • Glucose
  • optical coherence tomography
  • percent clearing
  • porcine skin
  • scattering coefficient

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Medicine (miscellaneous)
  • Atomic and Molecular Physics, and Optics
  • Biomedical Engineering

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