Phase retrieval for improved three-dimensional velocimetry of dynamic x-ray blood speckle

Irvine, S. C.; Paganin, D. M.; Dubsky, S.; Lewis, R. A.; Fouras, A.
October 2008
Applied Physics Letters;10/13/2008, Vol. 93 Issue 15, p153901
Academic Journal
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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