Three-dimensional optic axis determination using variable-incidence-angle polarization-optical coherence tomography |
| |
Authors: | Ugryumova Nadezhda Gangnus Sergei V Matcher Stephen J |
| |
Institution: | Biomedical Physics Group, University of Exeter, Stocker Road, Exeter EX4 4QL, UK. |
| |
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. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|