High-resolution functional MRI at 3 T: 3D/2D echo-planar imaging with optimized physiological noise correction.

Détails

ID Serval
serval:BIB_E1C329369611
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
High-resolution functional MRI at 3 T: 3D/2D echo-planar imaging with optimized physiological noise correction.
Périodique
Magnetic Resonance in Medicine
Auteur(s)
Lutti A., Thomas D.L., Hutton C., Weiskopf N.
ISSN
1522-2594 (Electronic)
ISSN-L
0740-3194
Statut éditorial
Publié
Date de publication
2013
Volume
69
Numéro
6
Pages
1657-1664
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't Publication Status: ppublish.
Résumé
High-resolution functional MRI (fMRI) offers unique possibilities for studying human functional neuroanatomy. Although high-resolution fMRI has proven its potential at 7 T, most fMRI studies are still performed at rather low spatial resolution at 3 T. We optimized and compared single-shot two-dimensional echo-planar imaging (EPI) and multishot three-dimensional EPI high-resolution fMRI protocols. We extended image-based physiological noise correction from two-dimensional EPI to multishot three-dimensional EPI. The functional sensitivity of both acquisition schemes was assessed in a visual fMRI experiment. The physiological noise correction increased the sensitivity significantly, can be easily applied, and requires simple recordings of pulse and respiration only. The combination of three-dimensional EPI with physiological noise correction provides exceptional sensitivity for 1.5 mm high-resolution fMRI at 3 T, increasing the temporal signal-to-noise ratio by more than 25% compared to two-dimensional EPI.
Pubmed
Web of science
Création de la notice
08/07/2013 9:22
Dernière modification de la notice
20/08/2019 16:05
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