An optimized center-out k-space trajectory for multishot MRI: Comparison with spiral and projection reconstruction

Research output: Contribution to journalArticle

31 Scopus citations

Abstract

A method for collecting MRI data on a set of rotated trajectories that begin at the center of k-space is outlined. It is theoretically slightly faster, slightly less susceptible to off-resonance and motion-induced phase, and produces images with slightly better signal-to-noise ratio than methods using Archimedean spiral trajectories, particularly for a short sampling duration. It also produces more accurate images than those of projection reconstruction methods, which are significantly undersampled azimuthally. This method may be most useful when imaging areas with large inhomogeneities (e.g., near metallic implants), short T2 species, or high turbulence (e.g., gas imaging).

Original languageEnglish (US)
Pages (from-to)714-720
Number of pages7
JournalMagnetic Resonance in Medicine
Volume42
Issue number4
DOIs
StatePublished - Oct 16 1999

Keywords

  • K-space
  • Projection reconstruction
  • Spiral
  • Susceptibility
  • Trajectory

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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