Keywords: Spinal Cord, Motion Correction, MR Value, Body, Clinical Applications, Spine
Motivation: Patient motion during spine MRI significantly degrades diagnostic utility.
Goal(s): Demonstrate the benefits of an efficient retrospective motion correction technique across clinical 2D TSE spine protocols.
Approach: A rapid low-resolution scout scan in combination with a small number of additional calibration lines are utilized for on-the-fly bulk motion estimation. Region-targeting coil-combination methods are used to model non-rigid motion in the spine. Generalized reconstructions are performed using locally rigid motion information.
Results: Improved image quality for in vivo L- and C-spine scans utilizing partially non-rigid motion correction for instructed subject motion experiments.
Impact: A strategy for performing motion estimation and correction in TSE spine imaging is proposed. Region-targeting coil-combination methods allow for isolation of different spatial sources of non-rigid motion. Improved image quality is demonstrated in vivo under supervised motion conditions.
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