GRASE imaging at 3 Tesla with template interactive phase-encoding

Jorge Jovicich*, David G. Norris

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

11 Citations (Scopus)


A new method for ordering the phase-encoding gradient is proposed, and an application for short effective TE gradient- and spin-echo (GRASE) imaging is demonstrated. The proposed method calculates the phase-encoding order from the signal decay of a template scan (hence 'template interactive phase- encoding' or TIPE). Computer simulations are used to compare the point spread functions of different phase-encoding orders giving short effective echo times (kb centric GRASE, centric GRASE, centric TIPE). The conventional centric phase-encoding order is also considered for GRASE. The conventional centric method is sensitive to both amplitude and phase modulation of the signal in k-space. The centric TIPE method gives the least amplitude modulation artifacts but is vulnerable to phase artifacts. The TIPE experiment was implemented on a 3 Tesla system. To the best of our knowledge, we present the first in vivo GRASE images at this field strength.

Original languageEnglish
Pages (from-to)970-979
Number of pages10
JournalMagnetic resonance in medicine
Issue number6
Publication statusPublished - Jun 1998
Externally publishedYes


  • High-field imaging
  • Image artifacts
  • Rapid imaging
  • n/a OA procedure


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