Water-fat separation with bipolar multiecho sequences.

@article{Lu2008WaterfatSW,
  title={Water-fat separation with bipolar multiecho sequences.},
  author={Wenmiao Lu and Huanzhou Yu and Ann S Shimakawa and Marcus Alley and Scott B. Reeder and Brian A. Hargreaves},
  journal={Magnetic resonance in medicine},
  year={2008},
  volume={60 1},
  pages={198-209}
}
Multiecho sequences provide an efficient means to acquire multiple echoes in a single repetition, which has found applications in spectroscopy, relaxometry, and water-fat separation. By replacing the fly-back gradients in unipolar multiecho sequences with alternating readout gradients, bipolar multiecho sequences greatly reduce both echo-spacing and repetition interval. This offers many attractive advantages, such as shorter scan times, higher SNR efficiency, more robust field map estimation… CONTINUE READING

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