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Three-Dimensional Phase Resolved Functional Lung Magnetic Resonance Imaging
Published on: June 21, 2024
Reconstructing very short TE phase rotation spectral data collected with multichannel phased-array coils at 3 T
S Andrea Wijtenburg1, Jack Knight-Scott
1Department of Radiology, Children's Healthcare of Atlanta, Atlanta, GA 30322, USA.
Magnetic Resonance Imaging
|May 10, 2011
Summary
This study demonstrates a new method for magnetic resonance spectroscopy using phase rotation STEAM (PR-STEAM) to detect glutathione and glutamate in the human brain. This technique enhances the identification of key metabolites in the anterior cingulate gyrus.
Area of Science:
- Neuroimaging
- Magnetic Resonance Spectroscopy
- Metabolomics
Background:
- Proton Magnetic Resonance Spectroscopy (MRS) is a non-invasive technique for detecting brain metabolites.
- Short echo time (TE) MRS is crucial for detecting low-concentration metabolites like glutathione.
- The anterior cingulate gyrus is an important brain region involved in cognitive functions.
Purpose of the Study:
- To present a novel method for combining phase rotation STEAM (PR-STEAM) data from multiple subcoils.
- To acquire and analyze very short TE MRS data from the anterior cingulate gyrus at 3 Tesla.
- To assess the detectability of primary metabolites, glutathione, and glutamate using the developed PR-STEAM technique.
Main Methods:
- Utilized phased-array volume coils with the PR-STEAM technique for MRS data acquisition.
- Acquired data from the anterior cingulate gyrus (6 cm³) in seven healthy participants at 3 T.
- Employed specific PR-STEAM parameters (TR/TM/TE=3500/10/6.5 ms) and post-processing with LCModel.
Main Results:
- Successfully acquired very short TE MRS data from the anterior cingulate gyrus.
- The developed method allowed for the combination of PR-STEAM data from multiple subcoils.
- LCModel fitting indicated that glutathione and glutamate could be identified with Cramér-Rao lower bounds ≤10%.
Conclusions:
- The presented method enables the detection of glutathione and glutamate in the anterior cingulate gyrus using short TE MRS.
- PR-STEAM spectroscopy is a viable technique for quantifying key metabolites in specific brain regions.
- This advancement holds potential for future neurochemical research and clinical applications.
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