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Velocity field measurements of valvular blood flow in a human superficial vein using high-frequency ultrasound speckle image velocimetry SCIE SCOPUS

Title
Velocity field measurements of valvular blood flow in a human superficial vein using high-frequency ultrasound speckle image velocimetry
Authors
KWON HO NAMEUN SEOP YEOMHO JIN HALee, SJ
Date Issued
2012-01
Publisher
Springer
Abstract
This study aims to investigate the blood flow around the perivalvular area in a human superficial vein using high-frequency ultrasound (HFUS) speckle image velocimetry. HFUS B-mode images were captured from the superficial veins of human lower extremity with a 35-MHz transducer. To measure the instantaneous velocity fields of blood flow, a cross-correlation particle image velocimetry (PIV) algorithm was applied to two B-mode images that were captured consecutively. The echo speckles of red blood cells (RBCs) were used as flow tracers. In the vicinity of the venous valve, the opening and closing motions of valve cusps were simultaneously visualized with the phasic variation of velocity fields. Large-scale vortices were observed behind the sinus pockets while the main bloodstream was directed proximally. This measurement technique combining PIV algorithm and HFUS B-mode imaging was found to be unique and useful for investigating the hemodynamic characteristics of blood flow in the perivalvular area and for diagnosing venous insufficiency and valve abnormality in superficial blood vessels.
Keywords
Blood flow; High-frequency ultrasound; Particle image velocimetry; Venous valve; JUGULAR VENOUS VALVES; IN-VIVO; ECHO PIV; ECHOGENICITY; MICROVESSELS; VALIDATION; SYSTEM
URI
https://oasis.postech.ac.kr/handle/2014.oak/16616
DOI
10.1007/S10554-010-9778-X
ISSN
1569-5794
Article Type
Article
Citation
INTERNATIONAL JOURNAL OF CARDIOVASCULAR IMAGING, vol. 28, no. 1, page. 69 - 77, 2012-01
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이상준LEE, SANG JOON
Dept of Mechanical Enginrg
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