Retrospective image correction in the presence of nonlinear temporal magnetic field changes using multichannel navigator echoes.

@article{Versluis2012RetrospectiveIC,
  title={Retrospective image correction in the presence of nonlinear temporal magnetic field changes using multichannel navigator echoes.},
  author={Maarten J. Versluis and Bradley P. Sutton and Paul W. de Bruin and Peter B{\"o}rnert and Andrew G. Webb and Matthias J. P. van Osch},
  journal={Magnetic resonance in medicine},
  year={2012},
  volume={68 6},
  pages={1836-45}
}
Spatio-temporal magnetic field changes in the brain caused by breathing or body movements can lead to image artifacts. This is especially a problem in T(2)(*)-weighted sequences. With the acquisition of an extra echo (navigator), it is possible to measure the magnetic field change induced frequency offset for a given slice during image acquisition. However, substantial local variation across a slice can occur. This work describes an extension of the conventional navigator technique that… CONTINUE READING

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