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Comparison of Four-Dimensional Flow Magnetic Resonance Imaging and Particle Image Velocimetry to Quantify Velocity and Turbulence Parameters

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Abstract
Abstract: Although recent advances of four-dimensional (4D) flow magnetic resonance imaging
(MRI) has introduced a new way to measure Reynolds stress tensor (RST) in turbulent flows, its
measurement accuracy and possible bias have remained to be revealed. The purpose of this study
was to compare the turbulent flow measurement of 4D flow MRI and particle image velocimetry
(PIV) in terms of velocity and turbulence quantification. Two difference flow rates of 10 and 20 L/min
through a 50% stenosis were measured with both PIV and 4D flow MRI. Not only velocity through
the stenosis but also the turbulence parameters such as turbulence kinetic energy and turbulence
production were quantitatively compared. Results shows that 4D flow MRI velocity measurement
well agreed with the that of PIV, showing the linear regression slopes of two methods are 0.94 and
0.89, respectively. Although turbulence mapping of 4D flow MRI was qualitatively agreed with that
of PIV, the quantitative comparison shows that the 4D flow MRI overestimates RST showing the
linear regression slopes of 1.44 and 1.66, respectively. In this study, we demonstrate that the 4D flow
MRI visualize and quantify not only flow velocity and also turbulence tensor. However, further
optimization of 4D flow MRI for better accuracy might be remained.
Author(s)
Doohyeon KimJihun KangEhsan AdeebGyu-Han Lee양동현Hojin Ha
Issued Date
2021
Type
Article
Keyword
4D flow MRIMRIfluid dynamicsparticle image velocimetryturbulence
DOI
10.3390/fluids6080277
URI
https://oak.ulsan.ac.kr/handle/2021.oak/8930
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_doaj_primary_oai_doaj_org_article_05ad9fc7404e44b2b47a2172864b03e6&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Comparison%20of%20Four-Dimensional%20Flow%20Magnetic%20Resonance%20Imaging%20and%20Particle%20Image%20Velocimetry%20to%20Quantify%20Velocity%20and%20Turbulence%20Parameters&offset=0&pcAvailability=true
Publisher
Fluids
Location
스위스
Language
영어
ISSN
2311-5521
Citation Volume
6
Citation Number
8
Citation Start Page
277
Citation End Page
0
Appears in Collections:
Engineering > Medical Engineering
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