Motion-Corrected Structural Realignment and Quantitative Voxel Targeting in Magnetic Resonance Spectroscopy

Motion correction and quantitative voxel targeting in MRS improve accuracy by 24%, eliminate bone contamination, and reduce tissue variability in 31 participants.

• Why it matters: Accurate neurochemical measurement via MRS is hindered by head motion and tissue displacement, which compromise spectral quality and data usability, especially when voxel shifts into bone tissue.
• What they did: The study combined automatic voxel repositioning using an 18-second head scout MRI with structural MRI realignment, and introduced a voxel-ROI overlap metric to objectively assess targeting accuracy across three brain regions in 31 subjects.
• The result: This approach increased voxel-ROI overlap by 24%, reduced tissue composition variability by 8.1%, and fully eliminated bone contamination in affected cases, providing a fast, hardware-independent solution for improved MRS accuracy.