Four-dimensional-flow Magnetic Resonance Imaging of the Aortic Valve and Thoracic Aorta - 27/05/20

Doi : 10.1016/j.rcl.2020.02.008

Fatemehsadat Jamalidinan, PhD ^a,^b, Ali Fatehi Hassanabad, MD ^b, Christopher J. François, MD ^c, Julio Garcia, PhD ^a,^b,^d,^e,^⁎
^a Department of Radiology, Cumming School of Medicine, University of Calgary, 1403 - 29 Street Northwest, Calgary, AB T2N 2T9, Canada
^b Department of Cardiac Sciences, Cumming School of Medicine, University of Calgary, 1403 - 29 Street Northwest, Calgary, AB T2N 2T9, Canada
^c Department of Radiology, University of Wisconsin, 600 Highland Avenue, Madison, WI 53792, USA
^d Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
^e Alberta Children’s Hospital Research Institute, University of Calgary, 1403 - 29 Street Northwest, Calgary, AB T2N 2T9, Canada

^∗Corresponding author. Foothills Medical Centre - SSB #0700 - 1403 29th Street Northwest, Calgary, AB T2N 2T9, Canada.Foothills Medical Centre - SSB #0700 - 1403 29th Street NorthwestCalgaryABT2N 2T9Canada

Résumé

Blood flow through the heart and great vessels is sensitive to time and multiple velocity directions. The assessment of its three-dimensional nature has been limited. Recent advances in magnetic resonance imaging (MRI) allow the comprehensive visualization and quantification of in vivo flow dynamics using four-dimensional (4D)-flow MRI. In addition, the technique provides the opportunity to obtain advanced hemodynamic measures. This article introduces 4D-flow MRI as it is currently used for blood flow visualization and quantification of cardiac hemodynamic parameters. It discusses its advantages relative to other flow MRI techniques and describes its potential clinical applications.

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Keywords : MRI, Flow imaging, 4D-flow MRI, Wall shear stress, Vorticity, Helicity, Viscous energy loss, Turbulent kinetic energy

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Key points

Introduction

Flow Imaging with Magnetic Resonance Imaging: From Two-dimensional to Four-dimensional

Aortic Four-dimensional Flow

Four-dimensional-flow Magnetic Resonance Imaging: Three-dimensional Blood Flow Visualization and Quantification

Diagnostic criteria

Acute Thoracic Aortic Syndromes

Aortic Aneurysms

Genetic Diseases Affecting the Aorta

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Vol 58 - N° 4

P. 753-763 - juillet 2020 Retour au numéro

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Four-dimensional-flow Magnetic Resonance Imaging of the Aortic Valve and Thoracic Aorta - 27/05/20

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