Endoscopic low coherence topography measurement for upper airways and hollow samples

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 pig bronchi.


Published in:
Journal of Biomedical Optics, 15, 6, 066014
Year:
2010
ISSN:
1083-3668
Keywords:
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 Record created 2010-09-28, last modified 2018-03-17

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