Robust and fast whole brain mapping of the RF transmit field B1 at 7T.

Détails

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Etat: Public
Version: de l'auteur
ID Serval
serval:BIB_8A5555174755
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Robust and fast whole brain mapping of the RF transmit field B1 at 7T.
Périodique
Plos One
Auteur(s)
Lutti A., Stadler J., Josephs O., Windischberger C., Speck O., Bernarding J., Hutton C., Weiskopf N.
ISSN
1932-6203 (Electronic)
ISSN-L
1932-6203
Statut éditorial
Publié
Date de publication
2012
Volume
7
Numéro
3
Pages
e32379
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov'tPublication Status: ppublish
Résumé
In-vivo whole brain mapping of the radio frequency transmit field B(1) (+) is a key aspect of recent method developments in ultra high field MRI. We present an optimized method for fast and robust in-vivo whole-brain B(1) (+) mapping at 7T. The method is based on the acquisition of stimulated and spin echo 3D EPI images and was originally developed at 3T. We further optimized the method for use at 7T. Our optimization significantly improved the robustness of the method against large B(1) (+) deviations and off-resonance effects present at 7T. The mean accuracy and precision of the optimized method across the brain was high with a bias less than 2.6 percent unit (p.u.) and random error less than 0.7 p.u. respectively.
Mots-clé
Brain Mapping/methods, Computer Simulation, Germany, Humans, Imaging, Three-Dimensional/methods, Magnetic Fields, Magnetic Resonance Imaging/methods, Models, Theoretical, Whole Body Imaging/methods
Pubmed
Web of science
Open Access
Oui
Création de la notice
08/07/2013 9:22
Dernière modification de la notice
20/08/2019 14:49
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