High-resolution synchrotron-based x-ray phase-contrast images of in vitro blood flow have been collected. We demonstrate that the application of a single-image phase retrieval algorithm to the images leads to improved detail in particle image velocimetry correlation peaks. Out-of-plane variation in flow has been extracted from the peaks leading to the three-dimensional reconstruction of velocity across an axially symmetric cylinder.
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Irvine et al. (2008) studied this question.
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