Nonrigid motion correction in 3D using autofocusing with localized linear translations.

  title={Nonrigid motion correction in 3D using autofocusing with localized linear translations.},
  author={Joseph Y. Cheng and Marcus T. Alley and Charles Cunningham and Shreyas S Vasanawala and John M. Pauly and Michael Lustig},
  journal={Magnetic resonance in medicine},
  volume={68 6},
MR scans are sensitive to motion effects due to the scan duration. To properly suppress artifacts from nonrigid body motion, complex models with elements such as translation, rotation, shear, and scaling have been incorporated into the reconstruction pipeline. However, these techniques are computationally intensive and difficult to implement for online reconstruction. On a sufficiently small spatial scale, the different types of motion can be well approximated as simple linear translations… CONTINUE READING
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