Journal article
Vector and Doppler Ultrasound Velocities Evaluated in a Flow Phantom and the Femoropopliteal Vein
Rigshospitalet1
Department of Electrical Engineering, Technical University of Denmark2
Biomedical Engineering, Department of Electrical Engineering, Technical University of Denmark3
University of Copenhagen4
Copenhagen University Hospital Herlev and Gentofte5
Center for Fast Ultrasound Imaging, Centers, Technical University of Denmark6
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.
Language: | English |
---|---|
Year: | 2017 |
Pages: | 2477-2487 |
ISSN: | 1879291x and 03015629 |
Types: | Journal article |
DOI: | 10.1016/j.ultrasmedbio.2017.06.020 |
ORCIDs: | Holbek, Simon , Jensen, Jørgen Arendt , 0000-0001-7368-0869 and 0000-0002-9380-1688 |