Impact of navigator timing on free-breathing submillimeter 3D coronary magnetic resonance angiography.

Détails

ID Serval
serval:BIB_780B98E45963
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Impact of navigator timing on free-breathing submillimeter 3D coronary magnetic resonance angiography.
Périodique
Magnetic Resonance In Medicine
Auteur⸱e⸱s
Spuentrup E., Manning W.J., Botnar R.M., Kissinger K.V., Stuber M.
ISSN
0740-3194[print], 0740-3194[linking]
Statut éditorial
Publié
Date de publication
2002
Volume
47
Numéro
1
Pages
196-201
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Résumé
The purpose of this study was to investigate the impact of navigator timing on image quality in navigator-gated and real-time motion-corrected, free-breathing, three-dimensional (3D) coronary MR angiography (MRA) with submillimeter spatial image resolution. Both phantom and in vivo investigations were performed. 3D coronary MRA with real-time navigator technology was applied using variable navigator time delays (time delay between the navigator and imaging sequences) and varying spatial resolutions. Quantitative objective and subjective image quality parameters were assessed. For high-resolution imaging, reduced image quality was found as a function of increasing navigator time delay. Lower spatial resolution coronary MRA showed only minor sensitivity to navigator timing. These findings were consistent among volunteers and phantom experiments. In conclusion, for submillimeter navigator-gated and real-time motion-corrected 3D coronary MRA, shortening the time delay between the navigator and the imaging portion of the sequence becomes increasingly important for improved spatial resolution.
Mots-clé
Coronary Disease/diagnosis, Coronary Vessels/anatomy & histology, Humans, Imaging, Three-Dimensional, Magnetic Resonance Angiography, Phantoms, Imaging
Pubmed
Web of science
Création de la notice
02/03/2010 16:04
Dernière modification de la notice
20/08/2019 14:34
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