Radial Alternating TE Sequence for Faster Fat Suppression

Chris A. Flask, Brian Dale, Jonathan S. Lewin, Jeffrey L. Duerk

Research output: Contribution to journalArticlepeer-review

Abstract

This study describes a steady-state sequence that uses a radial k-space trajectory and alternating echo times (TEs) between even and odd k-space views. The sequence generated a single data set that was used to reconstruct images with inherent fat suppression. This fat suppression results from the fat phase variation in alternate echoes giving rise to cancellation in the central portion of k-space. This new fat-suppression method provides inherent fat suppression in half the acquisition time relative to the radial two-point Dixon method. The improvement in k-space sampling efficiency is demonstrated in phantom and clinical images, and through measured point-spread functions (PSFs). As a result, the radial alternating TE sequence offers improved temporal resolution over a radial version of the two-point Dixon sequence by requiring fewer total projections to obtain the same effective resolution in water-based tissues.

Original languageEnglish (US)
Pages (from-to)1095-1099
Number of pages5
JournalMagnetic resonance in medicine
Volume50
Issue number5
DOIs
StatePublished - Nov 2003

Keywords

  • Dixon methods
  • Fat suppression
  • Radial acquisition
  • Rapid MRI

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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