Velocity unwrap for high resolution slice-selective Fourier velocity encoding using spiral SENSE.
Presented at: ISMRM 2012, Melbourne, Australia.
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:||Conference item (UNSPECIFIED)|
|Title:||Velocity unwrap for high resolution slice-selective Fourier velocity encoding using spiral SENSE|
|Dates:||07 May 2012 - 12 May 2012|
|UCL classification:||UCL > School of Life and Medical Sciences
UCL > School of Life and Medical Sciences > Faculty of Medical Sciences
UCL > School of Life and Medical Sciences > Faculty of Medical Sciences > Medicine (Division of)
Archive Staff Only