Simple method for MR gradient system characterization and k-space trajectory estimation.

  title={Simple method for MR gradient system characterization and k-space trajectory estimation.},
  author={Nii Okai Addy and Holden H Wu and Dwight G. Nishimura},
  journal={Magnetic resonance in medicine},
  volume={68 1},
Fast imaging trajectories are used in MRI to speed up the acquisition process, but imperfections in the gradient system create artifacts in the reconstructed images. Artifacts result from the deviation between k-space trajectories achieved on the scanner and their original prescription. Measuring or approximating actual k-space trajectories with predetermined gradient timing delays reduces the artifacts, but are generally based on a specific trajectory and scan orientation. A single linear time… CONTINUE READING


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