Udskriv Udskriv
Switch language
Region Hovedstaden - en del af Københavns Universitetshospital

Vector and Doppler Ultrasound Velocities Evaluated in a Flow Phantom and the Femoropopliteal Vein

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  1. Full-Volume Assessment of Abdominal Aortic Aneurysms by 3-D Ultrasound and Magnetic Tracking

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  2. Contrast-Enhanced Ultrasound: Development of Syllabus for Core Theoretical and Practical Competencies

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  3. Flow Complexity Estimation in Dysfunctional Arteriovenous Dialysis Fistulas using Vector Flow Imaging

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  4. Commentary on the World Federation for Ultrasound in Medicine and Biology Project "Incidental Findings"

    Publikation: Bidrag til tidsskriftKommentar/debatForskningpeer review

Vis graf over relationer

Ultrasound is used for evaluating the veins of the lower extremities. Operator and angle dependency limit spectral Doppler ultrasound (SDUS). The aim of the study was to compare peak velocity measurements in a flow phantom and the femoropopliteal vein of 20 volunteers with the angle-independent vector velocity technique vector flow imaging (VFI) and SDUS. In the flow phantom, VFI underestimated velocity (p = 0.01), with a lower accuracy of 5.5% (p = 0.01) and with no difference in precision, that is, error factor, compared with SDUS (VFI: 1.02 vs. SDUS: 1.02, p = 0.58). In vivo, VFI estimated lower velocities (femoral: p = 0.001; popliteal: p = 0.001) with no difference in precision compared with SDUS (femoral: VFI 1.09 vs. SDUS 1.14, p = 0.37; popliteal: VFI 1.13 vs. SDUS 1.06, p = 0.09). In conclusion, the precise VFI technique can be used to characterize venous hemodynamics of the lower extremities despite its underestimation of velocities.

TidsskriftUltrasound in Medicine and Biology
Udgave nummer10
Sider (fra-til)2477-2487
Antal sider11
StatusUdgivet - okt. 2017

ID: 52072969