Direct comparison of 3D spiral vs. Cartesian gradient-echo coronary magnetic resonance angiography.

Détails

ID Serval
serval:BIB_DB09A5038020
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Direct comparison of 3D spiral vs. Cartesian gradient-echo coronary magnetic resonance angiography.
Périodique
Magnetic Resonance In Medicine
Auteur⸱e⸱s
Börnert P., Stuber M., Botnar R.M., Kissinger K.V., Koken P., Spuentrup E., Manning W.J.
ISSN
0740-3194[print], 0740-3194[linking]
Statut éditorial
Publié
Date de publication
2001
Volume
46
Numéro
4
Pages
789-794
Langue
anglais
Notes
Publication types: Comparative Study ; Journal Article
Publication Status: ppublish
Résumé
While 3D thin-slab coronary magnetic resonance angiography (MRA) has traditionally been performed using a Cartesian acquisition scheme, spiral k-space data acquisition offers several potential advantages. However, these strategies have not been directly compared in the same subjects using similar methodologies. Thus, in the present study a comparison was made between 3D coronary MRA using Cartesian segmented k-space gradient-echo and spiral k-space data acquisition schemes. In both approaches the same spatial resolution was used and data were acquired during free breathing using navigator gating and prospective slice tracking. Magnetization preparation (T(2) preparation and fat suppression) was applied to increase the contrast. For spiral imaging two different examinations were performed, using one or two spiral interleaves, during each R-R interval. Spiral acquisitions were found to be superior to the Cartesian scheme with respect to the signal-to-noise ratio (SNR) and contrast-to-noise-ratio (CNR) (both P < 0.001) and image quality. The single spiral per R-R interval acquisition had the same total scan duration as the Cartesian acquisition, but the single spiral had the best image quality and a 2.6-fold increase in SNR. The double-interleaf spiral approach showed a 50% reduction in scanning time, a 1.8-fold increase in SNR, and similar image quality when compared to the standard Cartesian approach. Spiral 3D coronary MRA appears to be preferable to the Cartesian scheme. The increase in SNR may be "traded" for either shorter scanning times using multiple consecutive spiral interleaves, or for enhanced spatial resolution.
Mots-clé
Adult, Coronary Angiography/methods, Humans, Imaging, Three-Dimensional, Magnetic Resonance Angiography/methods, Middle Aged
Pubmed
Web of science
Création de la notice
02/03/2010 16:04
Dernière modification de la notice
20/08/2019 16:00
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