Selective detection of ordered sodium signals by a jump-and-return pulse sequence

Jae Seung Lee, Ravinder R. Regatte, Alexej Jerschow

Research output: Contribution to journalArticlepeer-review


A simple pulse sequence, derived from the shaped pulse optimally exciting the central transition of a spin 3/2, can be used to selectively detect ordered sodium with a given quadrupolar coupling. The pulse sequence consists of two pulses with opposite phases and separated by a delay, called a quadrupolar jump-and-return (QJR) sequence. This QJR sequence is tested with a phantom made of sodium ions in bacteriophage and in aqueous solution and its feasibility for contrast modification based on the quadrupolar coupling is demonstrated.

Original languageEnglish (US)
Pages (from-to)126-129
Number of pages4
JournalJournal of Magnetic Resonance
Issue number1
StatePublished - Sep 2009


  • Jump-and-return
  • MRI contrast
  • Na MRI
  • Pf1 bacteriophage
  • Quadrupolar

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Nuclear and High Energy Physics
  • Condensed Matter Physics


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