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Lactate imaging of the human brain at 1.5 T using a double-quantum filter
A A de Graaf1, P R Luyten, J A den Hollander
1Delft University of Technology, The Netherlands.
Magnetic Resonance in Medicine
|August 1, 1993
Summary
This study introduces a double-quantum filtered 1H NMR imaging technique to map brain lactate distribution. The method successfully visualized lactate in two patients, demonstrating its feasibility compared to existing techniques.
Area of Science:
- Neuroimaging
- Magnetic Resonance Spectroscopy
- Biochemistry
Background:
- Lactate accumulation is a marker for various neurological conditions.
- Accurate spatial mapping of brain lactate is crucial for diagnosis and monitoring.
- Existing spectroscopic imaging techniques have limitations in lactate detection.
Purpose of the Study:
- To develop and evaluate a double-quantum filtered 1H NMR spectroscopic imaging technique for spatial lactate detection in the human brain.
- To compare the feasibility of this novel technique against established single-quantum and single-voxel methods.
Main Methods:
- Utilized a double-quantum filtered 1H NMR spectroscopic imaging sequence.
- Acquired single-slice lactate images in two human patients.
- Compared results with single-quantum spectroscopic imaging and single-voxel techniques.
- Assessed lipid signal suppression and lactate signal loss.
Main Results:
- Successfully obtained double-quantum filtered lactate images, revealing lactate distribution across entire brain slices.
- Demonstrated sufficient lipid signal suppression for unambiguous lactate detection.
- Observed a 50-70% signal loss in lactate compared to single-quantum signals due to the filter's incorporation.
Conclusions:
- The double-quantum filtered 1H NMR spectroscopic imaging technique is feasible for mapping brain lactate distribution.
- This method offers improved lactate detection capabilities, despite a quantifiable signal loss.
- Further optimization may enhance sensitivity for clinical applications.