1. Articles from Stefan O. Baumann

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    1. Polarization sensitive optical coherence tomography of melanin provides intrinsic contrast based on depolarization

      Polarization sensitive optical coherence tomography of melanin provides intrinsic contrast based on depolarization

      Polarization sensitive optical coherence tomography (PS-OCT) is a functional extension of OCT. In addition to imaging based on tissue reflectivity, PS-OCT also enables depth-resolved mapping of sample polarization properties such as phase-retardation, birefringent axis orientation, Stokes vectors, and degree of polarization uniformity (DOPU). In this study, PS-OCT was used to investigate the polarization properties of melanin. In-vitro measurements in samples with varying melanin concentrations revealed polarization scrambling, i.e. depolarization of backscattered light. Polarization scrambling in the PS-OCT images was more pronounced for higher melanin concentrations and correlated with the concentration of the melanin granules in the phantoms. Moreover, in-vivo ...

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    1. (1 articles) Medical University of Vienna
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