Results 261 to 270 of about 396,810 (295)
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Clinical Applications of MRA 4D-Flow
Current Treatment Options in Cardiovascular Medicine, 2019Four-dimensional (4D)-Flow cardiovascular magnetic resonance (CMR) is three-dimensional, time-resolved, three-directional velocity-encoded magnetic resonance that provides flow velocity data within a volumetric region across the cardiac cycle (CC). The goals of this paper are to review the current clinical applications of this technique; provide an ...
Lilia M, Sierra-Galan +1 more
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2017
4D flow is a unique technique to measure the in vivo blood velocity vector spatially and temporally resolved. It allows deriving important hemodynamic parameters such as peak velocity, net flow, wall shear stress, and others, which are important parameters for a large range of diseases.
Sebastian Schmitter, Susanne Schnell
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4D flow is a unique technique to measure the in vivo blood velocity vector spatially and temporally resolved. It allows deriving important hemodynamic parameters such as peak velocity, net flow, wall shear stress, and others, which are important parameters for a large range of diseases.
Sebastian Schmitter, Susanne Schnell
openaire +1 more source
2021
4D Flow MRI has emerged as a new imaging technique for assessing 3D flow dynamics in the heart and great arteries (e.g., Aorta) in vivo. 4D Flow MRI provides in vivo voxel-wise mapping of 3D time-resolved three-directional velocity vector-field information. However, current techniques underutilize such comprehensive vector-field information by reducing
Mohammed S. M. ElBaz +3 more
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4D Flow MRI has emerged as a new imaging technique for assessing 3D flow dynamics in the heart and great arteries (e.g., Aorta) in vivo. 4D Flow MRI provides in vivo voxel-wise mapping of 3D time-resolved three-directional velocity vector-field information. However, current techniques underutilize such comprehensive vector-field information by reducing
Mohammed S. M. ElBaz +3 more
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On the limitations of echo planar 4D flow MRI
Magnetic Resonance in Medicine, 2020PurposeTo compare EPI and GRE readout in high‐flow velocity regimes and evaluate their impact on measurement accuracy in silico and in vitro.Theory and MethodsPhase‐contrast sequences for EPI and GRE were simulated using CFD velocity data to assess displacement artifacts as well as effective spatial resolution.
Dillinger, Hannes +2 more
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La radiologia medica, 2020
4D Flow is an emerging MR technique enabling three-dimensional and cardiac phase-resolved flowmetry with ECG-gated phase-contrast MRI that increased the speed of data acquisitions, accuracy and robustness. The method is promoting researches in areas that have not been fully addressed before in the cardiovascular system, such as flowmetry of the ...
openaire +2 more sources
4D Flow is an emerging MR technique enabling three-dimensional and cardiac phase-resolved flowmetry with ECG-gated phase-contrast MRI that increased the speed of data acquisitions, accuracy and robustness. The method is promoting researches in areas that have not been fully addressed before in the cardiovascular system, such as flowmetry of the ...
openaire +2 more sources
Comparison of turbulent flow measurement schemes for 4D flow MRI
Journal of Visualization, 2019Recently, time-resolved 3D phase contrast magnetic resonance imaging, which is also called 4D flow MRI or 4D PC-MRI, has been widely utilized to investigate spatial and temporal variations in the hemodynamic characteristics of blood flows. The conventional 4D flow MRI only provides the ensemble-averaged mean flow information but misses flow fluctuation
Hojin Ha, Hanwook Park
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4D Flow MRI of the Thoracic Aorta
Radiology: Cardiothoracic ImagingThis review highlights selected applications and future directions of four-dimensional flow MRI in the thoracic aorta.
David Dushfunian +3 more
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4D FLOW in assessing blood flow in aorta.
Russian Journal for Personalized MedicineThe article is dedicated to reviewing the role of the 4D FLOW technique in assessing blood flow in the aorta. A brief historical and terminological overview is provided, along with a description of the current state of the issue. The clinical relevance and appropriateness of using this radiological diagnostic method are discussed.
S. R. Sheriev +3 more
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ISMRM Annual Meeting
Motivation: Conventional 4D flow may find application in diastolic dysfunction evaluations, but is limited by low contrast. Goal(s): Our goal was to extend our previously established 2D PC-SSFP to 4D flow for more robust mitral flow measurements, simultaneously providing E, A, e' and possibly tricuspid regurgitation in a single scan.
Jie Xiang +5 more
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Motivation: Conventional 4D flow may find application in diastolic dysfunction evaluations, but is limited by low contrast. Goal(s): Our goal was to extend our previously established 2D PC-SSFP to 4D flow for more robust mitral flow measurements, simultaneously providing E, A, e' and possibly tricuspid regurgitation in a single scan.
Jie Xiang +5 more
openaire +1 more source