Motion Correction in High-Resolution 3D Brain MRSI Without Water and Lipid Suppression.

ABSTRACT:

Purpose

To develop an effective method for correcting head motion in high-resolution, non-water-suppressed MRSI.

Methods

MRSI scans are susceptible to subject motion due to the long data acquisition time required for sufficient spatial-spectral encodings. The problem is more serious in non-water-suppressed MRSI experiments since motion artifacts in the water and lipid signals make their removal even more challenging. To address this problem, we propose a novel motion correction method that detects and discards motion-corrupted k-space data using TR-wise linear navigators. The discarded data are replaced with reconstructed data obtained by reformulating motion correction as a missing data reconstruction problem using sensitivity encodings. Extrinsic priors for water and lipid

SUBMITTER: Ke Z 

PROVIDER: S-EPMC12746361 | biostudies-literature | 2026 Mar

REPOSITORIES: biostudies-literature