Combined prospective and retrospective correction to reduce motion-induced image misalignment and geometric distortions in EPI.

@article{Ooi2013CombinedPA,
  title={Combined prospective and retrospective correction to reduce motion-induced image misalignment and geometric distortions in EPI.},
  author={Melvyn B. Ooi and Jordan Muraskin and Xiaowei Zou and William J. Thomas and Sascha Krueger and Murat Aksoy and Roland Bammer and Truman R. Brown},
  journal={Magnetic resonance in medicine},
  year={2013},
  volume={69 3},
  pages={803-11}
}
Despite rigid-body realignment to compensate for head motion during an echo-planar imaging time-series scan, nonrigid 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 nonrigid components of this motion-related image misalignment. Prospective rigid-body correction, where the scan-plane orientation is dynamically updated to track… CONTINUE READING