Constraining the initial phase in water-fat separation

Mark Bydder, Takeshi Yokoo, Huanzhou Yu, Michael Carl, Scott B. Reeder, Claude B. Sirlin

Research output: Contribution to journalArticlepeer-review

32 Scopus citations


An algorithm is described for use in chemical shift-based water-fat separation to constrain the phase of both species to be equal at an echo time of zero. This constraint is physically reasonable since the initial phase should be a property of the excitation pulse and receiver coil only. The advantages of phase constrained water-fat separation, namely, improved noise performance and/or reduced data requirements (fewer echos), are demonstrated in simulations and experiments.

Original languageEnglish (US)
Pages (from-to)216-221
Number of pages6
JournalMagnetic Resonance Imaging
Issue number2
StatePublished - Feb 2011


  • Chemical shift
  • Dixon
  • Phase
  • Water-fat separation

ASJC Scopus subject areas

  • Biophysics
  • Biomedical Engineering
  • Radiology Nuclear Medicine and imaging


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