A point-resolved spectroscopy (PRESS)-localized double quantum filter was implemented on a 1.5T clinical scanner for the estimation of gamma-amino butyric acid (GABA) concentrations in vivo. Several calibrations were found to be necessary for consistent results to be obtained. The apparent filter yi
Lactate imaging of the human brain at 1.5 T using a double-quantum filter
✍ Scribed by A. A. De Graaf; P. R. Luyten; J. A. Den Hollander; W. Heindel; W. M. M. J. Bovée
- Publisher
- John Wiley and Sons
- Year
- 1993
- Tongue
- English
- Weight
- 577 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0740-3194
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
The use of a double‐quantum filtered ^1^H NMR spectroscopic imaging technique is described to detect the spatial distribution of lactate in the human brain. In two patients the feasibility of this technique is shown and compared with existing single‐quantum spectroscopic imaging and single voxel techniques. Singles lice double‐quantum fitered lactate images were obtained showing the lactate distribution over the entire slice in the brain. The lipid signal suppression was sufficient for the unambiguous detection of lactate. The signal loss of the lactate signal due to the incorporation of the double‐quantum filter was 50–70% relative to the single‐quantum signal.
📜 SIMILAR VOLUMES
## Abstract Single‐shot echo planar imaging (EPI) techniques have been applied, in conjunction with arterial spin tagging approaches, to obtain images of cerebral blood flow in a single axial slice in the human brain. Serial studies demonstrate that cerebral blood flow images acquired in 8 min are
## Abstract A proton MR spectral editing technique employing a spatially localized, double‐quantum filter (DQF) was used to measure γ‐aminobutyric acid (GABA) in the human brain at 1.5 T. The double‐quantum method provided robust, single‐shot suppression of uncoupled resonances from choline, creati
A double-quantum filter (DQF) sequence with PRESS localization was developed for in vivo detection of the glucose resonances in the 3.85-ppm region of the brain proton spectrum. The efficiency and spectral editing characteristics were studied in phantom and animal experiments. Approximately 45% dete