High resolution in-vivo DT-CMR using an interleaved variable density spiral STEAM sequence.
Adult
Algorithms
Anisotropy
Diffusion Magnetic Resonance Imaging
Diffusion Tensor Imaging
Echo-Planar Imaging
Female
Healthy Volunteers
Heart
/ diagnostic imaging
Heart Rate
Humans
Image Interpretation, Computer-Assisted
/ methods
Image Processing, Computer-Assisted
/ methods
Least-Squares Analysis
Male
Middle Aged
Motion
Signal-To-Noise Ratio
Systole
Young Adult
Cardiac
DTI
STEAM
in vivo
interleaved variable-density spiral readout
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:
03 2019
03 2019
Historique:
received:
25
04
2018
revised:
02
08
2018
accepted:
03
08
2018
pubmed:
9
11
2018
medline:
18
3
2020
entrez:
9
11
2018
Statut:
ppublish
Résumé
Diffusion tensor cardiovascular magnetic resonance (DT-CMR) has a limited spatial resolution. The purpose of this study was to demonstrate high-resolution DT-CMR using a segmented variable density spiral sequence with correction for motion, off-resonance, and T2*-related blurring. A single-shot stimulated echo acquisition mode (STEAM) echo-planar-imaging (EPI) DT-CMR sequence at 2.8 × 2.8 × 8 mm The high-resolution spiral sequence produced similar DT-CMR results and quality measures to the standard-resolution sequence in both cardiac phases. Residual differences in fractional anisotropy and helix angle gradient between the resolutions could be attributed to spatial resolution and/or signal-to-noise ratio. Data quality increased after both motion-induced phase correction and off-resonance correction, and sharpness increased after T2* correction. The high-resolution EPI sequence failed to provide sufficient data quality for DT-CMR reconstruction. In this study, an in vivo DT-CMR acquisition at 1.8 × 1.8 mm
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1580-1594Subventions
Organisme : Heart Research UK
ID : RG2648.
Pays : International
Informations de copyright
© 2018 International Society for Magnetic Resonance in Medicine.