In vivo 1H NMR spectroscopy of the human brain at 7 T.

Détails

ID Serval
serval:BIB_0E2D1A79D3A1
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
In vivo 1H NMR spectroscopy of the human brain at 7 T.
Périodique
Magnetic Resonance in Medicine
Auteur⸱e⸱s
Tkác I., Andersen P., Adriany G., Merkle H., Ugurbil K., Gruetter R.
ISSN
0740-3194 (Print)
ISSN-L
0740-3194
Statut éditorial
Publié
Date de publication
2001
Volume
46
Numéro
3
Pages
451-456
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, P.H.S.Publication Status: ppublish
Résumé
In vivo 1H NMR spectra from the human brain were measured at 7 T. Ultrashort echo-time STEAM was used to minimize J-modulation and signal attenuation caused by the shorter T2 of metabolites. Precise adjustment of higher-order shims, which was achieved with FASTMAP, was crucial to benefit from this high magnetic field. Sensitivity improvements were evident from single-shot spectra and from the direct detection of glucose at 5.23 ppm in 8-ml volumes. The linewidth of the creatine methyl resonance was at best 9 Hz. In spite of the increased linewidth of singlet resonances at 7 T, the ability to resolve overlapping multiplets of J-coupled spin systems, such as glutamine and glutamate, was substantially increased. Characteristic spectral patterns of metabolites, e.g., myo-inositol and taurine, were discernible in the in vivo spectra, which facilitated an unambiguous signal assignment.
Mots-clé
Adult, Brain/anatomy & histology, Brain/physiology, Brain Mapping, Energy Metabolism/physiology, Humans, Image Enhancement, Magnetic Resonance Spectroscopy, Neurotransmitter Agents/metabolism, Reference Values
Pubmed
Web of science
Création de la notice
04/08/2010 16:28
Dernière modification de la notice
20/08/2019 13:35
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