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Clinical magnetic resonance spectroscopy: a critical evaluation
1Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia 19104.
Investigative Radiology
|December 1, 1989
Summary
Magnetic resonance spectroscopy (MRS) shows promise in clinical radiology, with localized studies feasible on 1.5 T MRI scanners. However, challenges with radiofrequency coils and data analysis methods hinder widespread clinical adoption of MRS.
Area of Science:
- Medical Imaging
- Spectroscopy
- Radiology
Background:
- Magnetic Resonance Spectroscopy (MRS) is increasingly reported in clinical settings.
- Localized MRS studies are feasible using current 1.5 T whole-body MRI scanners.
Purpose of the Study:
- To critically assess the current status of MRS in clinical radiology.
- To identify challenges and opportunities for advancing MRS in clinical practice.
Main Methods:
- Review of current clinical MRS research and feasibility studies.
- Calculation of minimum achievable voxel sizes for proton and phosphorus-31 (31P) MRS in the brain.
- Evaluation of recent advancements, such as proton decoupling for 31P MRS.
Main Results:
- Increased number of research groups reporting clinical MRS results.
- Proton MRS utilizes the stimulated echo sequence; consensus on 31P MRS localization is lacking.
- Minimum voxel sizes: 2 cm³ for proton MRS, 30 cm³ for 31P MRS.
- Proton decoupling significantly improves localized 31P spectra quality at 1.5 T.
Conclusions:
- High-quality radiofrequency coils and user-independent spectral analysis methods are needed for further development.
- Translating research feasibility into routine clinical protocols presents significant challenges for manufacturers and researchers.