1. Slope-based segmentation of articular cartilage using polarization-sensitive optical coherence tomography phase retardation image

    Slope-based segmentation of articular cartilage using polarization-sensitive optical coherence tomography phase retardation image

    A segmentation method based on phase retardation measurements from polarization-sensitive optical coherence tomography (PS-OCT) is developed to differentiate the structural zones of articular cartilage. The organization of collagen matrix in articular cartilage varies over the different structural zones, generating different tissue birefringence. Analyzing the slope of the accumulated phase retardation at different depths can detect the variation in tissue birefringence and be used to segment the structural zones. The method is validated on phantoms composed of layers of different materials. Articular cartilage samples from adult swine are segmented with the method. The characteristics in each segmented zone are also examined ...

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