5D whole-heart sparse MRI.

Details

Serval ID
serval:BIB_1A902804BA34
Type
Article: article from journal or magazin.
Collection
Publications
Title
5D whole-heart sparse MRI.
Journal
Magnetic resonance in medicine
Author(s)
Feng L., Coppo S., Piccini D., Yerly J., Lim R.P., Masci P.G., Stuber M., Sodickson D.K., Otazo R.
ISSN
1522-2594 (Electronic)
ISSN-L
0740-3194
Publication state
Published
Issued date
02/2018
Peer-reviewed
Oui
Volume
79
Number
2
Pages
826-838
Language
english
Notes
Publication types: Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Abstract
A 5D whole-heart sparse imaging framework is proposed for simultaneous assessment of myocardial function and high-resolution cardiac and respiratory motion-resolved whole-heart anatomy in a single continuous noncontrast MR scan.
A non-electrocardiograph (ECG)-triggered 3D golden-angle radial balanced steady-state free precession sequence was used for data acquisition. The acquired 3D k-space data were sorted into a 5D dataset containing separated cardiac and respiratory dimensions using a self-extracted respiratory motion signal and a recorded ECG signal. Images were then reconstructed using XD-GRASP, a multidimensional compressed sensing technique exploiting correlations/sparsity along cardiac and respiratory dimensions. 5D whole-heart imaging was compared with respiratory motion-corrected 3D and 4D whole-heart imaging in nine volunteers for evaluation of the myocardium, great vessels, and coronary arteries. It was also compared with breath-held, ECG-gated 2D cardiac cine imaging for validation of cardiac function quantification.
5D whole-heart images received systematic higher quality scores in the myocardium, great vessels and coronary arteries. Quantitative coronary sharpness and length were always better for the 5D images. Good agreement was obtained for quantification of cardiac function compared with 2D cine imaging.
5D whole-heart sparse imaging represents a robust and promising framework for simplified comprehensive cardiac MRI without the need for breath-hold and motion correction. Magn Reson Med 79:826-838, 2018. © 2017 International Society for Magnetic Resonance in Medicine.
Keywords
Adult, Algorithms, Cardiac Imaging Techniques/methods, Coronary Vessels/diagnostic imaging, Female, Heart/diagnostic imaging, Humans, Imaging, Three-Dimensional/methods, Magnetic Resonance Imaging/methods, Male, Young Adult, 3D radial sampling, compressed sensing, coronary MRA, golden-angle, respiratory motion, whole-heart MRI
Pubmed
Web of science
Create date
23/05/2017 18:23
Last modification date
20/08/2019 13:51
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