Enhancement of measurement accuracy of X-ray PIV in comparison with the micro-PIV technique

Journal of Synchrotron Radiation
Hanwook ParkSang-Joon Lee

Abstract

The X-ray PIV (particle image velocimetry) technique has been used as a non-invasive measurement modality to investigate the haemodynamic features of blood flow. However, the extraction of two-dimensional velocity field data from the three-dimensional volumetric information contained in X-ray images is technically unclear. In this study, a new two-dimensional velocity field extraction technique is proposed to overcome technological limitations. To resolve the problem of finding a correction coefficient, the velocity field information obtained by X-ray PIV and micro-PIV techniques for disturbed flow in a concentric stenosis with 50% severity was quantitatively compared. Micro-PIV experiments were conducted for single-plane and summation images, which provide similar positional information of particles as X-ray images. The correction coefficient was obtained by establishing the relationship between velocity data obtained from summation images (VS) and centre-plane images (VC). The velocity differences between VS and VC along the vertical and horizontal directions were quantitatively analysed as a function of the geometric angle of the test model for applying the present two-dimensional velocity field extraction technique to a con...Continue Reading

References

Dec 11, 1999·JAMA : the Journal of the American Medical Association·A M MalekS Izumo
Aug 27, 2005·Nature Clinical Practice. Cardiovascular Medicine·C J SlagerP W Serruys
Oct 20, 2009·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·Arash KheradvarDavid Sahn
Feb 5, 2011·Annals of Biomedical Engineering·R Aidan JamisonAndreas Fouras
Oct 3, 2012·PloS One·Christian PoelmaJerry Westerweel
Oct 25, 2012·Journal of Synchrotron Radiation·R A JamisonAndreas Fouras
Apr 18, 2013·Journal of Synchrotron Radiation·Sung Yong JungSang Joon Lee
May 30, 2013·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·R LorenzM Markl
Jul 9, 2013·Circulation Research·Blase A Carabello
Jul 6, 2014·Medical Engineering & Physics·Hojin Ha, Sang Joon Lee
Sep 2, 2014·Journal of Synchrotron Radiation·Sang Joon LeeSung Yong Jung
Feb 11, 2015·Medical Engineering & Physics·Hojin HaSang Joon Lee
Apr 19, 2017·Journal of Biomechanical Engineering·Zifeng YangBryan Ludwig

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Citations

May 3, 2019·Applied Optics·Zifeng Yang, Mark Johnson

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