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Publication Detail
Velocity unwrap for high resolution slice-selective Fourier velocity encoding using spiral SENSE
  • Publication Type:
  • Authors:
    Steeden JA, Jones A, Atkinson D, Taylor AM, Muthurangu V
  • Publication date:
  • Pagination:
    672, ?
  • Status:
  • Name of conference:
    ISMRM 2012
  • Conference place:
    Melbourne, Australia
  • Conference start date:
  • Conference finish date:
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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