Superiority of prone position in free-breathing 3D coronary MRA in patients with coronary disease.

Détails

ID Serval
serval:BIB_2A0EAF37CCEB
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Superiority of prone position in free-breathing 3D coronary MRA in patients with coronary disease.
Périodique
Journal of Magnetic Resonance Imaging
Auteur(s)
Stuber M., Danias P.G., Botnar R.M., Sodickson D.K., Kissinger K.V., Manning W.J.
ISSN
1053-1807[print], 1053-1807[linking]
Statut éditorial
Publié
Date de publication
2001
Volume
13
Numéro
2
Pages
185-191
Langue
anglais
Notes
Publication types: Evaluation Studies ; Journal Article
Publication Status: ppublish
Résumé
Navigator-gated and corrected 3D coronary MR angiography (MRA) allows submillimeter image acquisition during free breathing. However, cranial diaphragmatic drift and relative phase shifts of chest-wall motion are limiting factors for image quality and scanning duration. We hypothesized that image acquisition in the prone position would minimize artifacts related to chest-wall motion and suppress diaphragmatic drift. Twelve patients with radiographically-confirmed coronary artery disease and six healthy adult volunteers were studied in both the prone and the supine position during free-breathing navigator-gated and corrected 3D coronary MRA. Image quality and the diaphragmatic positions were objectively compared. In the prone position, there was a 36% improvement in signal-to-noise ratio (SNR; 15.5 +/- 2.7 vs. 11.4 +/- 2.6; P < 0.01) and a 34% improvement in CNR (12.5 +/- 3.3 vs. 9.3 +/- 2.5, P < 0.01). The prone position also resulted in a 17% improvement in coronary vessel definition (P < 0.01). Cranial end-expiratory diaphragmatic drift occurred less frequently in the prone position (23% +/- 17% vs. 40% +/- 26% supine; P <0.05), and navigator efficiency was higher. Prone coronary MRA results in improved SNR and CNR with enhanced coronary vessel definition. Cranial end-expiratory diaphragmatic drift also was reduced, and navigator efficiency was enhanced. When feasible, prone imaging is recommended for free-breathing coronary MRA.
Mots-clé
Adult, Aged, Artifacts, Coronary Disease/diagnosis, Feasibility Studies, Female, Humans, Image Enhancement, Image Processing, Computer-Assisted, Imaging, Three-Dimensional, Magnetic Resonance Angiography, Male, Middle Aged, Prone Position, Sensitivity and Specificity
Pubmed
Web of science
Création de la notice
02/03/2010 16:04
Dernière modification de la notice
20/08/2019 13:09
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