In vivo measurement of glycine with short echo-time 1H MRS in human brain at 7 T.

Détails

ID Serval
serval:BIB_BE08A76AA6BB
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
In vivo measurement of glycine with short echo-time 1H MRS in human brain at 7 T.
Périodique
Magma
Auteur⸱e⸱s
Gambarota G., Mekle R., Xin L., Hergt M., van der Zwaag W., Krueger G., Gruetter R.
ISSN
0968-5243 (Print)
ISSN-L
0968-5243
Statut éditorial
Publié
Date de publication
2009
Volume
22
Numéro
1
Pages
1-4
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov'tPublication Status: ppublish
Résumé
OBJECT: To determine whether glycine can be measured at 7 T in human brain with (1)H magnetic resonance spectroscopy (MRS). MATERIALS AND METHODS: The glycine singlet is overlapped by the larger signal of myo-inositol. Density matrix simulations were performed to determine the TE at which the myo-inositol signal was reduced the most, following a single spin-echo excitation. (1)H MRS was performed on an actively shielded 7 T scanner, in five healthy volunteers. RESULTS: At the TE of 30 ms, the myo-inositol signal intensity was substantially reduced. Quantification using LCModel yielded a glycine-to-creatine ratio of 0.14 +/- 0.01, with a Cramer-Rao lower bound (CRLB) of 7 +/- 1%. Furthermore, quantification of metabolites other than glycine was possible as well, with a CRLB mostly below 10%. CONCLUSION: It is possible to detect glycine at 7 T in human brain, at the short TE of 30 ms with a single spin-echo excitation scheme.
Mots-clé
Algorithms, Brain/metabolism, Glycine/analysis, Humans, Magnetic Resonance Spectroscopy/methods, Neurotransmitter Agents/analysis, Protons/diagnostic use, Reproducibility of Results, Sensitivity and Specificity
Pubmed
Web of science
Création de la notice
04/08/2010 16:28
Dernière modification de la notice
20/08/2019 16:32
Données d'usage