A new T2 preparation technique for ultrafast gradient‐echo sequence

Todd Parrish, Xiaoping Hu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

The T2, contrast in images obtained with driven equilibrium (90°x−180°x−90°x) prepared ultrafast gradient‐echo sequences is compromised by the longitudinal magnetization build‐up after the second 90°x pulse, which does not carry T2 information. This paper describes a new T2 contrast preparation technique for ultrafast gradient‐echo sequence that suppresses the signal arising from the build‐up. By dephasing in the preparation and rephasing in the acquisition of the gradient echoes, the new technique eliminates signals that are not dictated by the T2 contrast in a driven‐equilibrium approach. Consequently, it generates an image that is essentially T2‐weighted. Phantom and in vivo experiments were conducted to validate the technique and to demonstrate its clinical utility. These studies indicate that the technique works properly and can be used for in vivo studies.

Original languageEnglish (US)
Pages (from-to)652-657
Number of pages6
JournalMagnetic resonance in medicine
Volume32
Issue number5
DOIs
StatePublished - Nov 1994

Keywords

  • T weighting
  • magnetization preparation
  • ultrafast gradient‐echo imaging

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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