Investigation of phase-contrast magnetic resonance imaging underestimation of turbulent flow through the aortic valve phantom: experimental and computational study using lattice Boltzmann method
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F20%3A00344939" target="_blank" >RIV/68407700:21340/20:00344939 - isvavai.cz</a>
Alternative codes found
RIV/00023001:_____/20:00080075
Result on the web
<a href="https://doi.org/10.1007/s10334-020-00837-5" target="_blank" >https://doi.org/10.1007/s10334-020-00837-5</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10334-020-00837-5" target="_blank" >10.1007/s10334-020-00837-5</a>
Alternative languages
Result language
angličtina
Original language name
Investigation of phase-contrast magnetic resonance imaging underestimation of turbulent flow through the aortic valve phantom: experimental and computational study using lattice Boltzmann method
Original language description
Objective The accuracy of phase-contrast magnetic resonance imaging (PC-MRI) measurement is investigated using a computational fluid dynamics (CFD) model with the objective to determine the magnitude of the flow underestimation due to turbulence behind a narrowed valve in a phantom experiment. Materials and methods An acrylic stationary flow phantom is used with three insertable plates mimicking aortic valvular stenoses of varying degrees. Positive and negative horizontal fluxes are measured at equidistant slices using standard PC-MRI sequences by 1.5T and 3T systems. The CFD model is based on the 3D lattice Boltzmann method (LBM). The experimental and simulated data are compared using the Bland-Altman-derived limits of agreement. Based on the LBM results, the turbulence is quantified and confronted with the level of flow underestimation. Results LBM gives comparable results to PC-MRI for valves up to moderate stenosis on both field strengths. The flow magnitude through a severely stenotic valve was underestimated due to signal void in the regions of turbulent flow behind the valve, consistently with the level of quantified turbulence intensity. Discussion Flow measured by PC-MRI is affected by noise and turbulence. LBM can simulate turbulent flow efficiently and accurately, it has therefore the potential to improve clinical interpretation of PC-MRI.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10102 - Applied mathematics
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
MAGNETIC RESONANCE MATERIALS IN PHYSICS BIOLOGY AND MEDICINE
ISSN
0968-5243
e-ISSN
1352-8661
Volume of the periodical
33
Issue of the periodical within the volume
10
Country of publishing house
GB - UNITED KINGDOM
Number of pages
14
Pages from-to
649-662
UT code for WoS article
000516939000001
EID of the result in the Scopus database
2-s2.0-85080899027