Motion corrected intracranial MRA using PROPELLER with RF quadratic encoding

Nicholas R. Zwart, James G. Pipe

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

A new motion corrected Time-of-Flight MRA technique named Variable Pitch PROPELLER is presented. This technique employs the PROPELLER acquisition and reconstruction scheme for in-plane bulk motion correction. A non-Fourier through-plane encoding mechanism called quadratic encoding boosts SNR, relative to conventional 2D MRA, in lieu of traditional 3D encoding. Partial Fourier encoding is applied in the slice direction for a further reduction in scan time. This work details the construction and optimization of this technique. VPPROP MRAs are compared with a clinical MOTSA protocol. Initial results show promising robustness to bulk motion effects. The comparisons with MOTSA provide insight as to the additions required to create a comparable scan.

Original languageEnglish (US)
Pages (from-to)1405-1414
Number of pages10
JournalMagnetic Resonance in Medicine
Volume61
Issue number6
DOIs
StatePublished - Jun 1 2009

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Keywords

  • Angiography
  • Chirp pulse
  • Frequency modulated
  • PROPELLER
  • Quadratic encoding

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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