An analysis of the intrinsic resonance offset dependence of magnetization generated by stimulated echo pulse sequences for noncoupled spins

D. Ballon, M. Garwood, J. A. Koutcher

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

It is demonstrated that the basic radiofrequency pulse train used to generate stimulated echoes (90xTE-90xTM-90xTE-Acq.) is in general characterized by strong amplitude and phase modulations of the transverse magnetization as a function of the resonance offset. Two dephasing techniques which eliminate the modulations are investigated both theoretically and experimentally, and a simple formula is derived for calculating the relative modulation across a spectrum as a function of gradient strength and duration, echo delay, and spectral linewidth.

Original languageEnglish (US)
Pages (from-to)569-575
Number of pages7
JournalMagnetic Resonance Imaging
Volume9
Issue number4
DOIs
StatePublished - 1991

Bibliographical note

Funding Information:
Acknowledgments-This research was supported in part by NIH grants #HL32427, #CA50703, and #R29CA43841.

Keywords

  • In vivo spectroscopy
  • Resonance offset
  • STEAM
  • Spectroscopic localization
  • Stimulated echo

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