## Abstract __N__‐Acetylaspartate (NAA) is one of the most important metabolites detectable by brain ^1^H‐MRS being considered an index of neuronal integrity. At the low magnetic field used in most clinical settings β,γ‐glutamate/glutamine (Glx) resonances are very close and partially overlap the m
Quantification of glutamate, glutamine, and other metabolites in In Vivo proton NMR spectroscopy
✍ Scribed by W. M. M. J. Bovée
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 403 KB
- Volume
- 4
- Category
- Article
- ISSN
- 0952-3480
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
A reliable quantification of in vivo ^1^H MRS spectra is hampered by extensive line overlap, by intensity distortions due to the water suppressing pulse sequence and complex modulation patterns of J‐coupled spins, and by deviations between the experimental and model lineshapes in computer fitting programs. By correcting the experimental lineshape, using a suitable pulse sequence, and incorporating prior knowledge about the spin systems and the intensity distortions, a sufficient quantification is possible. If reliable. T~2~ values are available absolute concentrations can be determined.
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## Abstract Molecular self‐diffusion coefficients of water (0.75 ± 0.05), Nacetylaspartate (0.27 ± 0.04), creatines (0.27 ± 0.04), and cholines (0.28 ± 0.08) × 10^−5^ cm^2^ s^−1^ were obtained from localized proton NMR spectra of rat brain in vivo using diffusion‐weighted stimulated‐echo (STEAM) se
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