Venous Duplex for Varicose Veins

Varicose veins are caused by a condition in which the valves in veins do not function correctly, and blood flows backwards down the leg instead of toward the heart. A Venous Duplex Scan is an ultrasound test that can show if the valves in veins do not function normally. The Vascular Lab specializes in this type of examination, but many vascular labs do not fully evaluate veins for this abnormality.

In this examination, gel is applied to the skin of the leg. A transducer (a handheld device) is then used to scan the varicose veins. The transducer sends high-frequency sound waves into the leg, and images of blood flow are obtained which show the direction of blood flow in the veins. This information is used to identify venous insufficiency (reflux). Ultrasound is then used to direct appropriate treatment of the varicose veins.

Reflux (backward blood flow) identified by Duplex Scan

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