Respiratory self-navigated postcontrast whole-heart coronary MR angiography: initial experience in patients.

Détails

ID Serval
serval:BIB_3B6C76626E87
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Respiratory self-navigated postcontrast whole-heart coronary MR angiography: initial experience in patients.
Périodique
Radiology
Auteur(s)
Piccini D., Monney P., Sierro C., Coppo S., Bonanno G., van Heeswijk R.B., Chaptinel J., Vincenti G., de Blois J., Koestner S.C., Rutz T., Littmann A., Zenge M.O., Schwitter J., Stuber M.
ISSN
1527-1315 (Electronic)
ISSN-L
0033-8419
Statut éditorial
Publié
Date de publication
2014
Volume
270
Numéro
2
Pages
378-386
Langue
anglais
Notes
Publication types: Journal ArticlePublication Status: ppublish
Résumé
PURPOSE: To assess the diagnostic performance of respiratory self-navigation for whole-heart coronary magnetic resonance (MR) angiography in a patient cohort referred for diagnostic cardiac MR imaging.
MATERIALS AND METHODS: Written informed consent was obtained from all participants for this institutional review board-approved study. Self-navigated coronary MR angiography was performed after administration of a contrast agent in 78 patients (mean age, 48.5 years ± 20.7 [standard deviation]; 53 male patients) referred for cardiac MR imaging because of coronary artery disease (n = 40), cardiomyopathy (n = 14), congenital anomaly (n = 17), or "other" (n = 7). Examination duration was recorded, and the image quality for each coronary segment was assessed with consensus reading. Vessel sharpness, length, and diameter were measured. Quantitative values in proximal, middle, and distal segments were compared by using analysis of variance and t tests. A double-blinded comparison with the results of x-ray angiography was performed when such results were available.
RESULTS: When patients with different indications for cardiac MR imaging were examined with self-navigated postcontrast coronary MR angiography, whole-heart data sets with 1.15-mm isotropic spatial resolution were acquired in an average of 7.38 minutes ± 1.85. The main and proximal coronary segments could be visualized in 92.3% of cases, while the middle and distal segments could be visualized in 84.0% and 55.8% of cases, respectively. Subjective scores and vessel sharpness were significantly higher in the proximal segments than in the middle and distal segments (P < .05). Anomalies of the coronary arteries could be confirmed or excluded in all cases. Per-vessel sensitivity and specificity for stenosis detection were 64.7% and 85.0%, respectively, in the 31 patients for whom reference standard x-ray coronary angiography results were available.
CONCLUSION: The self-navigated coronary MR angiography sequence shows promise for coronary imaging. However, technical improvements are needed to improve image quality, especially in the more distal coronary segments.
Mots-clé
Adolescent, Adult, Aged, Aged, 80 and over, Child, Contrast Media/diagnostic use, Coronary Angiography, Double-Blind Method, Female, Heart Diseases/diagnosis, Humans, Image Interpretation, Computer-Assisted, Imaging, Three-Dimensional, Magnetic Resonance Angiography/methods, Male, Middle Aged, Organometallic Compounds/diagnostic use, Respiration
Pubmed
Web of science
Open Access
Oui
Création de la notice
19/03/2014 14:04
Dernière modification de la notice
20/08/2019 14:31
Données d'usage