Short TE in vivo (1)H MR spectroscopic imaging at 1.5 T: acquisition and automated spectral analysis.
Magn Reson Imaging
; 18(9): 1159-65, 2000 Nov.
Article
em En
| MEDLINE
| ID: mdl-11118771
ABSTRACT
Spectral analysis of short TE in vivo proton magnetic resonance spectroscopic imaging (MRSI) data are complicated by the presence of spectral overlap, low signal to noise and uncharacterized signal contributions. In this study, it is shown that an automated data analysis method can be used to generate metabolite images from MRSI data obtained from human brain at TE = 25 ms and 1.5 T when optimized pulse sequences and a priori metabolite knowledge are used. The analysis approach made use of computer simulation methods to obtain a priori spectral information of the metabolites of interest and utilized a combination of parametric spectral modeling and non-parametric signal characterization for baseline fitting. This approach was applied to data from optimized PRESS-SI and multi-slice spin-echo SI acquisitions, for which sample spectra and metabolite images are shown.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Encéfalo
/
Imageamento por Ressonância Magnética
/
Espectroscopia de Ressonância Magnética
Limite:
Humans
Idioma:
En
Revista:
Magn Reson Imaging
Ano de publicação:
2000
Tipo de documento:
Article
País de afiliação:
Estados Unidos