Steeden, JA and Jones, A and Atkinson, D and Taylor, AM and Muthurangu, V (2012) Velocity unwrap for high resolution slice-selective Fourier velocity encoding using spiral SENSE. In: (Proceedings) ISMRM 2012. (pp. 672 - ?).
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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.
| Type: | Proceedings paper |
|---|---|
| Title: | Velocity unwrap for high resolution slice-selective Fourier velocity encoding using spiral SENSE |
| Event: | ISMRM 2012 |
| Location: | Melbourne, Australia |
| Dates: | 2012-05-07 - 2012-05-12 |
| UCL classification: | UCL > School of Life and Medical Sciences > Faculty of Medical Sciences > Medicine (Division of) |
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