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http://dx.doi.org/10.3795/KSME-B.2005.29.11.1182

Development of X-ray PIV Technique and its Application to Blood Flow  

Kim, Guk Bae (포항공과대학교 대학원 기계공학과)
Lee, Sang Joon (포항공과대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.29, no.11, 2005 , pp. 1182-1188 More about this Journal
Abstract
An x-ray PIV (Particle Image Velocimetry) technique was developed to measure quantitative information on flows inside opaque conduits and on opaque-fluid flows. At first, the developed x-ray PIV technique was applied to flow in an opaque Teflon tube. To acquire x-ray images suitable for PIV velocity field measurements, refraction-based edge enhancement mechanism was employed using detectable tracer particles. The optimal distance between with the sample and detector was experimentally determined. The resulting amassed velocity field data were in reasonable agreement with the theoretical prediction. The x-ray PIV technique was also applied to blood flow in a microchannel. The flow pattern of blood was visualifed by enhancing the diffraction/interference -bas ed characteristic s of blood cells on synchrotron x-rays without any contrast agent or tracer particles. That is, the flow-pattern image of blood was achieved by optimizing the sample (blood) to detector distance and the sample thickness. Quantitative velocity field information was obtained by applying PIV algorithm to the enhanced x-ray flow images. The measured velocity field data show a typical flow structure of flow in a macro-scale channel.
Keywords
X-ray Imaging Technique; PIV Technique; X-ray PIV Technique; Opaque Tube; Blood Flow;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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