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Combined prospective and retrospective correction to reduce motion-induced image misalignment and geometric distortions in EPI
2012
Magnetic Resonance in Medicine
Despite rigid-body realignment to compensate for head motion during an echo-planar imaging (EPI) time-series scan, non-rigid image deformations remain due to changes in the effective shim within the brain as the head moves through the B 0 field. The current work presents a combined prospective/retrospective solution to reduce both rigid and non-rigid components of this motionrelated image misalignment. Prospective rigid-body correction, where the scan-plane orientation is dynamically updated to
doi:10.1002/mrm.24285
pmid:22499027
pmcid:PMC3402592
fatcat:cwjxeo3m4rdhrohwnevbxka34i