Evaluation of Peak Reflux Velocities with Vector Flow Imaging and Spectral Doppler Ultrasound in Varicose Veins
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Evaluation of Peak Reflux Velocities with Vector Flow Imaging and Spectral Doppler Ultrasound in Varicose Veins. / Bechsgaard, Thor; Hansen, Kristoffer Lindskov; Brandt, Andreas; Moshavegh, Ramin; Forman, Julie Lyng; Føgh, Pia; Klitfod, Lotte; Bækgaard, Niels; Lönn, Lars; Jensen, Jørgen Arendt; Nielsen, Michael Bachmann.
In: Ultrasound International Open, Vol. 4, No. 3, 2018, p. E91-E98.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Evaluation of Peak Reflux Velocities with Vector Flow Imaging and Spectral Doppler Ultrasound in Varicose Veins
AU - Bechsgaard, Thor
AU - Hansen, Kristoffer Lindskov
AU - Brandt, Andreas
AU - Moshavegh, Ramin
AU - Forman, Julie Lyng
AU - Føgh, Pia
AU - Klitfod, Lotte
AU - Bækgaard, Niels
AU - Lönn, Lars
AU - Jensen, Jørgen Arendt
AU - Nielsen, Michael Bachmann
PY - 2018
Y1 - 2018
N2 - Purpose Spectral Doppler ultrasound (SDUS) is used for quantifying reflux in lower extremity varicose veins. The technique is angle-dependent opposed to the new angle-independent Vector Flow Imaging (VFI) method. The aim of this study was to compare peak reflux velocities obtained with VFI and SDUS in patients with chronic venous disease, i. e., pathological retrograde blood flow caused by incompetent venous valves. Materials and Methods 64 patients with chronic venous disease were scanned with VFI and SDUS in the great or the small saphenous vein, and reflux velocities were compared to three assessment tools for chronic venous disease. A flow rig was used to assess the accuracy and precision of the two methods. Results The mean peak reflux velocities differed significantly (VFI: 47.4 cm/s vs. SDUS: 62.0 cm/s, p<0.001). No difference in absolute precision (p=0.18) nor relative precision (p=0.79) was found. No correlation to disease severity, according to assessment tools, was found for peak reflux velocities obtained with either method. In vitro, VFI was more accurate but equally precise when compared to SDUS. Conclusion Both VFI and SDUS detected the pathologic retrograde flow in varicose veins but measured different reflux velocities with equal precision. VFI may play a role in evaluating venous disease in the future.
AB - Purpose Spectral Doppler ultrasound (SDUS) is used for quantifying reflux in lower extremity varicose veins. The technique is angle-dependent opposed to the new angle-independent Vector Flow Imaging (VFI) method. The aim of this study was to compare peak reflux velocities obtained with VFI and SDUS in patients with chronic venous disease, i. e., pathological retrograde blood flow caused by incompetent venous valves. Materials and Methods 64 patients with chronic venous disease were scanned with VFI and SDUS in the great or the small saphenous vein, and reflux velocities were compared to three assessment tools for chronic venous disease. A flow rig was used to assess the accuracy and precision of the two methods. Results The mean peak reflux velocities differed significantly (VFI: 47.4 cm/s vs. SDUS: 62.0 cm/s, p<0.001). No difference in absolute precision (p=0.18) nor relative precision (p=0.79) was found. No correlation to disease severity, according to assessment tools, was found for peak reflux velocities obtained with either method. In vitro, VFI was more accurate but equally precise when compared to SDUS. Conclusion Both VFI and SDUS detected the pathologic retrograde flow in varicose veins but measured different reflux velocities with equal precision. VFI may play a role in evaluating venous disease in the future.
U2 - 10.1055/a-0643-4430
DO - 10.1055/a-0643-4430
M3 - Journal article
C2 - 30276359
VL - 4
SP - E91-E98
JO - Ultrasound International Open
JF - Ultrasound International Open
SN - 2199-7152
IS - 3
ER -
ID: 204305183