Validation of two accelerated 4D flow MRI sequences at 3 T: a phantom study.
Four-dimensional (4D) flow
Magnetic resonance imaging
Phantoms (imaging)
Pulsatile flow
Reproducibility of results
Journal
European radiology experimental
ISSN: 2509-9280
Titre abrégé: Eur Radiol Exp
Pays: England
ID NLM: 101721752
Informations de publication
Date de publication:
26 Feb 2019
26 Feb 2019
Historique:
received:
02
10
2018
accepted:
01
02
2019
entrez:
27
2
2019
pubmed:
27
2
2019
medline:
27
2
2019
Statut:
epublish
Résumé
Four-dimensional (4D) flow magnetic resonance imaging (MRI) sequences with advanced parallel imaging have the potential to reduce scan time with equivalent image quality and accuracy compared with standard two-dimensional (2D) flow MRI. We compared 4D flow to standard 2D flow sequences using a constant and pulsatile flow phantom at 3 T. Two accelerated 4D flow sequences (GRAPPA2 and k-t-GRAPPA5) were evaluated regarding the concordance of flow volumes, flow velocities, and reproducibility as well as dependency on measuring plane and velocity encoding (V No significant differences in flow volume were found between the 2D, both 4D flow MRI sequences, and the pump reference (p = 0.994) or flow velocities (p = 0.998) in continuous and pulsatile flow. An excellent correlation (R = 0.99-1.0) with a reference standard and excellent reproducibility of measurements (R = 0.99) was achieved for all sequences. A V Both 4D flow sequences demonstrated equal agreement with 2D flow measurements, without impact of V
Sections du résumé
BACKGROUND
BACKGROUND
Four-dimensional (4D) flow magnetic resonance imaging (MRI) sequences with advanced parallel imaging have the potential to reduce scan time with equivalent image quality and accuracy compared with standard two-dimensional (2D) flow MRI. We compared 4D flow to standard 2D flow sequences using a constant and pulsatile flow phantom at 3 T.
METHODS
METHODS
Two accelerated 4D flow sequences (GRAPPA2 and k-t-GRAPPA5) were evaluated regarding the concordance of flow volumes, flow velocities, and reproducibility as well as dependency on measuring plane and velocity encoding (V
RESULTS
RESULTS
No significant differences in flow volume were found between the 2D, both 4D flow MRI sequences, and the pump reference (p = 0.994) or flow velocities (p = 0.998) in continuous and pulsatile flow. An excellent correlation (R = 0.99-1.0) with a reference standard and excellent reproducibility of measurements (R = 0.99) was achieved for all sequences. A V
CONCLUSIONS
CONCLUSIONS
Both 4D flow sequences demonstrated equal agreement with 2D flow measurements, without impact of V
Identifiants
pubmed: 30806827
doi: 10.1186/s41747-019-0089-2
pii: 10.1186/s41747-019-0089-2
pmc: PMC6391502
doi:
Types de publication
Journal Article
Langues
eng
Pagination
10Subventions
Organisme : Deutsche Forschungsgemeinschaft
ID : GU 777/4-1-AOBJ 629068
Organisme : Deutsche Forschungsgemeinschaft
ID : GR 4617/3-1-AOBJ 629069
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