Endoscopic low-coherence topography measurement for upper airways and hollow samples

Yves Delacrétaz*, Etienne Shaffer, Nicolas Pavillon, Jonas Kühn, Florian Lang, Christian Depeursinge

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


To evaluate the severity of airway pathologies, quantitative dimensioning of airways is of utmost importance. Endoscopic vision gives a projective image and thus no true scaling information can be directly deduced from it. In this article, an approach based on an interferometric setup, a low-coherence laser source and a standard rigid endoscope is presented, and applied to hollow samples measurements. More generally, the use of the low-coherence interferometric setup detailed here could be extended to any other endoscopy-related field of interest, e.g., gastroscopy, arthroscopy and other medical or industrial applications where tri-dimensional topology is required. The setup design with a multiple fibers illumination system is presented. Demonstration of the method ability to operate on biological samples is assessed through measurements on ex vivo pig bronchi.

Original languageEnglish (US)
Article number066014
JournalJournal of biomedical optics
Issue number6
StatePublished - Nov 2010
Externally publishedYes


  • coherence imaging
  • contouring
  • endoscopy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Biomedical Engineering
  • Biomaterials


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