Fieldmap-Free Retrospective Registration and Distortion Correction for EPI-Based Functional Imaging

@article{Poynton2008FieldmapFreeRR,
  title={Fieldmap-Free Retrospective Registration and Distortion Correction for EPI-Based Functional Imaging},
  author={Clare B. Poynton and Mark Jenkinson and Stephen Whalen and Alexandra J. Golby and William M. Wells},
  journal={Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention},
  year={2008},
  volume={11 Pt 2},
  pages={271-9}
}
We describe a method for correcting the distortions present in echo planar images (EPI) and registering the EPI to structural MRI. A fieldmap is predicted from an air / tissue segmentation of the MRI using a perturbation method and subsequently used to unwarp the EPI data. Shim and other missing parameters are estimated by registration. We obtain results… CONTINUE READING