Distributed spirals: A new class of three-dimensional k-space trajectories

Dallas C. Turley, James G. Pipe

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

This work presents a new class of three-dimensional spiral based-trajectories for sampling magnetic resonance data. The distributed spirals trajectory efficiently traverses a cylinder or sphere or intermediate shape in k-space. The trajectory is shown to be nearly as efficient as a conventional stack of spirals trajectory in terms of scan time and signal-to-noise ratio, while reducing coherent aliasing in all three spatial directions and reducing Gibbs ringing due to the nature of collecting data from a sphere in k-space. The trajectory uses a single two-dimensional spiral waveform with the addition of a single orthogonal waveform which is scaled with each repetition, making it relatively easy to implement. Blurring from off-resonance only occurs in two dimensions due to the temporal nature of the sampling.

Original languageEnglish (US)
Pages (from-to)413-419
Number of pages7
JournalMagnetic Resonance in Medicine
Volume70
Issue number2
DOIs
StatePublished - Aug 1 2013

Keywords

  • golden angle
  • k-space trajectory
  • spiral MRI

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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