TY - JOUR
T1 - Respiratory variability of peak velocities in the common femoral vein estimated with vector flow imaging and Doppler ultrasound
AU - Bechsgaard, Thor
AU - Hansen, Kristoffer Lindskov
AU - Brandt, Andreas Hjelm
AU - Moshavegh, Ramin
AU - Forman, Julie Lyng
AU - Føgh, Pia
AU - Klitfod, Lotte
AU - Bækgaard, Niels
AU - Lönn, Lars
AU - Nielsen, Michael Bachmann
AU - Jensen, Jørgen Arendt
N1 - Copyright © 2018 World Federation for Ultrasound in Medicine & Biology. Published by Elsevier Inc. All rights reserved.
PY - 2018/9
Y1 - 2018/9
N2 - Respiratory variability of peak velocities (RVPV) in the common femoral vein measured with ultrasound can reveal venous outflow obstruction. Pulse wave (PW) Doppler is the gold standard for venous velocity estimation of the lower extremities. PW Doppler measurements are angle dependent, whereas vector flow imaging (VFI) can yield angle-independent measures. The hypothesis of the present study was that VFI can provide RVPV estimations without the angle dependency of PW Doppler for an improved venous disease assessment. Sixty-seven patients with symptomatic chronic venous disease were included in the study. On average, VFI measured a lower RVPV than PW Doppler (VFI: 14.11 cm/s; PW: 17.32 cm/s, p = 0.002) with a non-significant improved precision compared with PW Doppler (VFI: 21.09%; PW: 26.49%, p = 0.08). In a flow phantom, VFI had improved accuracy (p < 0.01) and equal precision compared with PW Doppler. The study indicated that VFI can characterize the hemodynamic fluctuations in the common femoral vein.
AB - Respiratory variability of peak velocities (RVPV) in the common femoral vein measured with ultrasound can reveal venous outflow obstruction. Pulse wave (PW) Doppler is the gold standard for venous velocity estimation of the lower extremities. PW Doppler measurements are angle dependent, whereas vector flow imaging (VFI) can yield angle-independent measures. The hypothesis of the present study was that VFI can provide RVPV estimations without the angle dependency of PW Doppler for an improved venous disease assessment. Sixty-seven patients with symptomatic chronic venous disease were included in the study. On average, VFI measured a lower RVPV than PW Doppler (VFI: 14.11 cm/s; PW: 17.32 cm/s, p = 0.002) with a non-significant improved precision compared with PW Doppler (VFI: 21.09%; PW: 26.49%, p = 0.08). In a flow phantom, VFI had improved accuracy (p < 0.01) and equal precision compared with PW Doppler. The study indicated that VFI can characterize the hemodynamic fluctuations in the common femoral vein.
U2 - 10.1016/j.ultrasmedbio.2018.05.006
DO - 10.1016/j.ultrasmedbio.2018.05.006
M3 - Journal article
C2 - 29960752
SN - 0301-5629
VL - 44
SP - 1941
EP - 1950
JO - Ultrasound in Medicine & Biology
JF - Ultrasound in Medicine & Biology
IS - 9
ER -