Numerical simulation of time-resolved 3D phase-contrast magnetic resonance imaging - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue PLoS ONE Année : 2021

Numerical simulation of time-resolved 3D phase-contrast magnetic resonance imaging

Résumé

A numerical approach is presented to efficiently simulate time-resolved 3D phase-contrast Magnetic resonance Imaging (or 4D Flow MRI) acquisitions under realistic flow conditions. The Navier-Stokes and Bloch equations are simultaneously solved with an Eulerian-Lagrangian formalism. A semi-analytic solution for the Bloch equations as well as a periodic particle seeding strategy are developed to reduce the computational cost. The velocity reconstruction pipeline is first validated by considering a Poiseuille flow configuration. The 4D Flow MRI simulation procedure is then applied to the flow within an in vitro flow phantom typical of the cardiovascular system. The simulated MR velocity images compare favorably to both the flow computed by solving the Navier-Stokes equations and experimental 4D Flow MRI measurements. A practical application is finally presented in which the MRI simulation framework is used to identify the origins of the MRI measurement errors.
Fichier principal
Vignette du fichier
journal.pone.0248816.pdf (4.22 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03228671 , version 1 (11-10-2021)

Identifiants

Citer

Thomas Puiseux, Anou Sewonu, Ramiro Moreno, Simon Mendez, Franck Nicoud. Numerical simulation of time-resolved 3D phase-contrast magnetic resonance imaging. PLoS ONE, 2021, 16 (3), pp.e0248816. ⟨10.1371/journal.pone.0248816⟩. ⟨hal-03228671⟩
54 Consultations
29 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More