Vector Flow Imaging Compared with Pulse Wave Doppler for Estimation of Peak Velocity in the Portal Vein

Andreas Hjelm Brandt*, Ramin Moshavegh, Kristoffer Lindskov Hansen, Thor Bechsgaard, Lars Lönn, Jørgen Arendt Jensen, Michael Bachmann Nielsen

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The study described here investigated whether angle-independent vector flow imaging (VFI) technique estimates peak velocities in the portal vein comparably to pulsed wave Doppler (PWD). Furthermore, intra- and inter-observer agreement was assessed in a substudy. VFI and PWD peak velocities were estimated with from intercostal and subcostal views for 32 healthy volunteers, and precision analyses were conducted. Blinded to estimates, three physicians rescanned 10 volunteers for intra- and inter-observer agreement analyses. The precision of VFI and PWD was 18% and 28% from an intercostal view and 23% and 77% from a subcostal view, respectively. Bias between VFI and PWD was 0.57 cm/s (p = 0.38) with an intercostal view and 9.89 cm/s (p 
Original languageEnglish
JournalUltrasound in Medicine and Biology
Volume44
Issue number3
Pages (from-to)593-601
ISSN0301-5629
DOIs
Publication statusPublished - 2018

Keywords

  • Abdominal ultrasound
  • Agreement analysis
  • Portal vein
  • Precision analysis
  • Pulsed wave Doppler
  • Vector flow imaging
  • Vector velocity

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