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Publication Detail
Velocity unwrap for high resolution slice-selective Fourier velocity encoding using spiral SENSE
  • Publication Type:
    Conference
  • Authors:
    Steeden JA, Jones A, Atkinson D, Taylor AM, Muthurangu V
  • Publication date:
    20/04/2012
  • Pagination:
    672, ?
  • Status:
    Published
  • Name of conference:
    ISMRM 2012
  • Conference place:
    Melbourne, Australia
  • Conference start date:
    07/05/2012
  • Conference finish date:
    12/05/2012
Abstract
Quantification of peak velocity is important in the assessment of stenotic flow jets. It is possible to measure peak velocity accurately using Fourier Velocity Encoding (FVE). In this study, a fast, high-resolution slice-selective FVE sequence was developed with the use of spiral trajectories, parallel-imaging, partial-Fourier in the velocity-dimension and a novel velocity-unwrap technique. The resulting sequence was acquired within a short breath-hold. Peak velocities were compared from Doppler ultrasound (US), phase-contrast MR (PCMR) and FVE. Experiments carried out in-vitro and in-vivo showed that PCMR tended to underestimate peak velocity compared to Doppler US, whereas FVE agreed well with Doppler US.
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