Titre
Coronary MR angiography at 3T during diastole and systole
Type
article
Institution
UNIL/CHUV/Unisanté + institutions partenaires
Périodique
Auteur(s)
Gharib, A.M.
Auteure/Auteur
Herzka, D.A.
Auteure/Auteur
Ustun, A.O.
Auteure/Auteur
Desai, M.Y.
Auteure/Auteur
Locklin, J.
Auteure/Auteur
Pettigrew, R.I.
Auteure/Auteur
Stuber, M.
Auteure/Auteur
Liens vers les personnes
Liens vers les unités
ISSN
1053-1807
Statut éditorial
Publié
Date de publication
2007
Volume
26
Numéro
4
Première page
921
Dernière page/numéro d’article
926
Peer-reviewed
Oui
Langue
anglais
Résumé
PURPOSE: To investigate the impact of end-systolic imaging on quality of right coronary magnetic resonance angiography (MRA) in comparison to diastolic and to study the effect of RR interval variability on image quality. MATERIALS AND METHODS: The right coronary artery (RCA) of 10 normal volunteers was imaged at 3T using parallel imaging (sensitivity encoding [SENSE]). Navigator-gated three-dimensional (3D) gradient echo was used three times: 1) end-systolic short acquisition (SS): 35-msec window; 2) diastolic short (DS): middiastolic acquisition using 35-msec window; and 3) diastolic long (DL): 75-msec diastolic acquisition window. Vectorcardiogram (VCG) data was used to analyze RR variability. Vessel sharpness, length, and diameter were compared to each other and correlated with RR variability. Blinded qualitative image scores of the images were compared. RESULTS: Quantitative and qualitative parameters were not significantly different and showed no significant correlation with RR variability. CONCLUSION: Imaging the RCA at 3T during the end-systolic rest period using SENSE is possible without significant detrimental effect on image quality. Breaking away from the standard of imaging only during diastole can potentially improve image quality in tachycardic patients or used for simultaneous imaging during both periods in a single scan.
PID Serval
serval:BIB_1DBF36C584BC
PMID
Open Access
Oui
Date de création
2010-03-02T15:04:40.421Z
Date de création dans IRIS
2025-05-20T19:38:27Z