1. Articles from Linda Otis

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    1. Polarization memory effect in optical coherence tomography and dental imaging application

      Polarization memory effect in optical coherence tomography and dental imaging application
      We report the existence of polarization memory effect (PME) in optical coherence tomography and investigate its potential applications in dental imaging. We performed the study in three steps. First, microsphere scattering phantoms of different sizes were imaged in order to validate experimental results with PME theory. Both linearly and circularly polarized light were used to probe the samples. Second, healthy tooth samples were scanned and polarization memory effect was identified in dentin. In this step, specific verification and signal processing were performed to rule out possible image interpretation by birefringence effect. Third, we evaluated dentin demineralization with PME. Results show ...
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    2. Characterization of dentin, enamel, and carious lesions by a polarization-sensitive optical coherence tomography system

      Enamel and dentin are the primary components of human teeth. Both of them have a strong polarization effect. We designed a polarization-sensitive optical coherence tomography (PSOCT) system to study the spatially resolved scattering and polarization phenomena of teeth. The system is constructed in free space to avoid the complexity of polarization control in fiber-based PSOCT. The structural features of enamel were evaluated in five human teeth that had no visible evidence of caries. The teeth were subsequently sectioned in mesial distal orientation and coronal orientation. Then the structural aspects of dentin were evaluated. OCT images were made of the mantel ...
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    1-2 of 2
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  2. Topics in the News

    1. (2 articles) University of Connecticut
    2. (2 articles) Quing Zhu
    3. (2 articles) Yueli L. Chen
    4. (1 articles) University of Maryland
    5. (1 articles) Daqing Piao
    6. (1 articles) University of Southern California
    7. (1 articles) UC Irvine
    8. (1 articles) Qifa Zhou
    9. (1 articles) K. Kirk Shung
    10. (1 articles) Heidelberg Engineering
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