Aortic 4D flow MRI in 2 minutes using compressed sensing, respiratory controlled adaptive k-space reordering, and inline reconstruction.
4D flow
aorta
cardiovascular
compressed sensing
Journal
Magnetic resonance in medicine
ISSN: 1522-2594
Titre abrégé: Magn Reson Med
Pays: United States
ID NLM: 8505245
Informations de publication
Date de publication:
06 2019
06 2019
Historique:
received:
17
10
2018
revised:
14
01
2019
accepted:
15
01
2019
pubmed:
26
2
2019
medline:
19
5
2020
entrez:
26
2
2019
Statut:
ppublish
Résumé
To evaluate the accuracy and feasibility of a free-breathing 4D flow technique using compressed sensing (CS), where 4D flow imaging of the thoracic aorta is performed in 2 min with inline image reconstruction on the MRI scanner in less than 5 min. The 10 in vitro 4D flow MRI scans were performed with different acceleration rates on a pulsatile flow phantom (9 CS acceleration factors [R = 5.4-14.1], 1 generalized autocalibrating partially parallel acquisition [GRAPPA] R = 2). Based on in vitro results, CS-accelerated 4D flow of the thoracic aorta was acquired in 20 healthy volunteers (38.3 ± 15.2 years old) and 11 patients with aortic disease (61.3 ± 15.1 years) with R = 7.7. A conventional 4D flow scan was acquired with matched spatial coverage and temporal resolution. CS depicted similar hemodynamics to conventional 4D flow in vitro, and in vivo, with >70% reduction in scan time (volunteers: 1:52 ± 0:25 versus 7:25 ± 2:35 min). Net flow values were within 3.5% in healthy volunteers, and voxel-by-voxel comparison demonstrated good agreement. CS significantly underestimated peak velocities (v Aortic 4D flow with CS is feasible in a two minute scan with less than 5 min for inline reconstruction. While net flow agreement was excellent, CS with R = 7.7 produced underestimation of Q
Identifiants
pubmed: 30803006
doi: 10.1002/mrm.27684
pmc: PMC6535305
mid: NIHMS1023988
doi:
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
3675-3690Subventions
Organisme : NHLBI NIH HHS
ID : K25 HL119608
Pays : United States
Organisme : NHLBI NIH HHS
ID : R01 HL115828
Pays : United States
Organisme : NHLBI NIH HHS
ID : F30 HL137279
Pays : United States
Organisme : NHLBI NIH HHS
ID : R01 HL133504
Pays : United States
Organisme : NINDS NIH HHS
ID : R21 NS106696
Pays : United States
Informations de copyright
© 2019 International Society for Magnetic Resonance in Medicine.
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