Gradient moment smoothing: a new flow compensation technique for multi-shot echo-planar imaging.

@article{Slavin1997GradientMS,
  title={Gradient moment smoothing: a new flow compensation technique for multi-shot echo-planar imaging.},
  author={Glenn S. Slavin and Stephen J. Riederer},
  journal={Magnetic resonance in medicine},
  year={1997},
  volume={38 3},
  pages={368-77}
}
This work identifies an additional source of phase error across ky in multi-shot echo-planar imaging resulting from flow or motion along the phase-encoding direction. A velocity-independent flow compensation technique, gradient moment smoothing, is presented that corrects this error by forcing the phase to have smooth quadratic behavior. The correction is implemented, without compromising scan time, by changing the first moment of a bipolar prephaser pulse on a shot-by-shot basis. In phantom… CONTINUE READING

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