1. Optical coherence tomography imaging of converging flow

    Optical coherence tomography imaging of converging flow
    The experimental methods of Doppler OCT are applied for two-dimensional flow mapping of highly scattering fluid in converging flow (die entry) to demonstrate non-invasive methods to map velocity distribution and velocity profiles before and after the entry. Complex geometry flow is scanned with ~ 10x10x10 μm3 spatial resolution. Broadening of Doppler spectra obtained with slow and rapid scanning optical delay lines are compared. Structural image of human finger tip in vivo using grating based rapid OCT is presented. Velocity profiles of different shapes were obtained before and after the phantom entry. Blunted, triangular and parabolic velocity profiles as well as structural ...
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