Initial results on in vivo human coronary MR angiography at 7 T.

Détails

ID Serval
serval:BIB_F205BF35FBDE
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Initial results on in vivo human coronary MR angiography at 7 T.
Périodique
Magnetic Resonance in Medicine
Auteur(s)
van Elderen S.G., Versluis M.J., Webb A.G., Westenberg J.J., Doornbos J., Smith N.B., de Roos A., Stuber M.
ISSN
1522-2594[electronic], 0740-3194[linking]
Statut éditorial
Publié
Date de publication
2009
Volume
62
Numéro
6
Pages
1379-1384
Langue
anglais
Résumé
Seven tesla (T) MR imaging is potentially promising for the morphologic evaluation of coronary arteries because of the increased signal-to-noise ratio compared to lower field strengths, in turn allowing improved spatial resolution, improved temporal resolution, or reduced scanning times. However, there are a large number of technical challenges, including the commercial 7 T systems not being equipped with homogeneous body radiofrequency coils, conservative specific absorption rate constraints, and magnified sample-induced amplitude of radiofrequency field inhomogeneity. In the present study, an initial attempt was made to address these challenges and to implement coronary MR angiography at 7 T. A single-element radiofrequency transmit and receive coil was designed and a 7 T specific imaging protocol was implemented, including significant changes in scout scanning, contrast generation, and navigator geometry compared to current protocols at 3 T. With this methodology, the first human coronary MR images were successfully obtained at 7 T, with both qualitative and quantitative findings being presented.
Mots-clé
Adult, Algorithms, Coronary Angiography/methods, Coronary Vessels/anatomy & histology, Female, Humans, Image Enhancement/methods, Image Interpretation, Computer-Assisted/methods, Magnetic Resonance Angiography/methods, Male, Pilot Projects, Reproducibility of Results, Sensitivity and Specificity
Pubmed
Web of science
Open Access
Oui
Création de la notice
02/03/2010 18:59
Dernière modification de la notice
09/05/2019 3:21
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