Three-dimensional optic axis determination using variable-incidence-angle polarization-optical coherence tomography.

Nadezhda Ugryumova; Sergei V Gangnus; Stephen J Matcher

doi:10.1364/ol.31.002305

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Three-dimensional optic axis determination using variable-incidence-angle polarization-optical coherence tomography.

Nadezhda Ugryumova·Sergei V Gangnus·Stephen J Matcher

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Abstract

Polarization optical coherence tomography (PSOCT) is a powerful technique to nondestructively map the retardance and fast-axis orientation of birefringent biological tissues. Previous studies have concentrated on the case where the optic axis lies on the plane of the surface. We describe a method to determine the polar angle of the optic axis of a uniaxial birefringent tissue by making PSOCT measurements with a number of incident illumination directions. The method is validated on equine flexor tendon, yielding a variability of 4% for the true birefringence and 3% for the polar angle. We use the method to map the polar angle of fibers in the transitional region of equine cartilage.

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Animals Anisotropy Horses Image Interpretation, Computer-Assisted Imaging, Three-Dimensional Refractometry Reproducibility of Results Sensitivity and Specificity Tendons Tomography, Optical Coherence Journal Article Research Support, Non-U.S. Gov't

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Nadezhda Ugryumova, Sergei V Gangnus, Stephen J Matcher. 2006-08-01. Three-dimensional optic axis determination using variable-incidence-angle polarization-optical coherence tomography.. https://doi.org/10.1364/ol.31.002305

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