Prospective motion correction for single-voxel 1H MR spectroscopy

Area of Science:

• Neuroimaging
• Biomedical Engineering
• Spectroscopy

Background:

• Head motion during in vivo (1)H MR spectroscopy compromises metabolite measurement quality and reliability.
• Accurate in vivo metabolite quantification is crucial for neurological research and clinical diagnostics.

Purpose of the Study:

• To develop and evaluate an integrated motion-tracking module for single-voxel (1)H MR spectroscopy (point-resolved spectroscopy).
• To improve the quality and reproducibility of MR spectroscopy data acquired during head motion.

Main Methods:

• A three-plane image-based motion-tracking module using orthogonal spiral navigator images was integrated into a point-resolved spectroscopy sequence.
• The MR spectroscopy voxel position was updated in real-time to compensate for estimated head motion.
• Postprocessing included frequency and phase corrections to enhance spectral quality.

Main Results:

• Motion correction significantly reduced lipid contamination in spectra acquired during intentional head motion.
• The implemented motion correction strategy increased the spectral reproducibility of in vivo metabolite measurements.
• Analysis of data from 11 volunteers confirmed the effectiveness of the motion correction technique.

Conclusions:

• The integrated motion-tracking module effectively compensates for head motion during (1)H MR spectroscopy.
• This technique enhances the reliability and quality of in vivo metabolite measurements, crucial for accurate research and diagnostics.
• The developed method offers a promising solution for improving MR spectroscopy data acquisition in challenging conditions.