Evaluation of Peak Reflux Velocities with Vector Flow Imaging and Spectral Doppler Ultrasound in Varicose Veins

Thor Bechsgaard; Kristoffer Lindskov Hansen; Andreas Brandt; Ramin Moshavegh; Julie Lyng Forman; Pia Føgh; Lotte Klitfod; Niels Bækgaard; Lars Lönn; Jørgen Arendt Jensen; Michael Bachmann Nielsen

doi:10.1055/a-0643-4430

Evaluation of Peak Reflux Velocities with Vector Flow Imaging and Spectral Doppler Ultrasound in Varicose Veins

Thor Bechsgaard, Kristoffer Lindskov Hansen, Andreas Brandt, Ramin Moshavegh, Julie Lyng Forman, Pia Føgh, Lotte Klitfod, Niels Bækgaard, Lars Lönn, Jørgen Arendt Jensen, Michael Bachmann Nielsen

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Abstract

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.

Original language	English
Journal	Ultrasound International Open
Volume	4
Issue number	3
Pages (from-to)	E91-E98
Number of pages	8
ISSN	2509-596X
DOIs	https://doi.org/10.1055/a-0643-4430
Publication status	Published - 2018

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Evaluation of Peak Reflux Velocities with Vector Flow Imaging and Spectral Doppler Ultrasound in Varicose VeinsFinal published version, 639 KBLicence: CC BY-NC-ND

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@article{24cafc56e78a4f6fa9e2b5252380ae26,

title = "Evaluation of Peak Reflux Velocities with Vector Flow Imaging and Spectral Doppler Ultrasound in Varicose Veins",

abstract = "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.",

author = "Thor Bechsgaard and Hansen, {Kristoffer Lindskov} and Andreas Brandt and Ramin Moshavegh and Forman, {Julie Lyng} and Pia F{\o}gh and Lotte Klitfod and Niels B{\ae}kgaard and Lars L{\"o}nn and Jensen, {J{\o}rgen Arendt} and Nielsen, {Michael Bachmann}",

year = "2018",

doi = "10.1055/a-0643-4430",

language = "English",

volume = "4",

pages = "E91--E98",

journal = "Ultrasound International Open",

issn = "2199-7152",

publisher = "GeorgThieme Verlag",

number = "3",

}

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

SN - 2199-7152

VL - 4

SP - E91-E98

JO - Ultrasound International Open

JF - Ultrasound International Open

IS - 3

ER -

Evaluation of Peak Reflux Velocities with Vector Flow Imaging and Spectral Doppler Ultrasound in Varicose Veins

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