Impact of Partial Echo on 4D Flow MRI: The Insight From Synthetic MRI
Year: 2026
Type: article
Abstract: PURPOSE: The aim of this study is to investigate the impact of the partial echo on 4D flow MRI sequences thanks to in silico coupled MRI-CFD (computational fluid dynamics) simulations. METHODS: Two sequences are studied: one with a full echo (FE) and another using partial echo (PE) with an echo symmetry fraction of 0.75. MRI-CFD simulations are conducted on an in silico pulsatile flow phantom for a sinusoidal inflow and a physiological inflow typical of the ascending aorta. RESULTS: For both inflow signals, PE-based simulations exhibited better compliance with their matching CFD simulations compared to the FE ones. CONCLUSION: The reduction of flow misregistration artifacts achieved through the use of PE appears to be more beneficial than the drawback of incomplete k-space filling. The MRI-CFD framework presented in this study appears as a useful tool to investigate the design of MRI sequences and to stratify its different sources of errors.
Source: Magnetic Resonance in Medicine
DOI: 10.1002/mrm.70260
Institutions: Centre National de la Recherche Scientifique, Institut national de recherche en sciences et technologies du numérique, Université de Montpellier, Centre Inria de Saclay, Institut Montpelliérain Alexander Grothendieck, Université Toulouse III - Paul Sabatier, Inserm, Institut des Maladies Métaboliques et Cardiovasculaires, Siemens (France), Siemens Healthineers (Germany), Institut Universitaire de France
Language: English
Subfield: Radiology, Nuclear Medicine and Imaging
Field: Medicine
Domain: Health Sciences
Open Access status: hybrid
Estimated APC paid: $3,680
OpenAlex ID: W7130939244