Duplex ultrasound is a non-invasive evaluation of blood flow through your arteries and veins . This test provides information to help your vascular surgeon make a sound diagnosis and outline a treatment plan.Click to see full answer. Regarding this, what is a duplex scan for?Arterial duplex scan is a painless exam that uses high-frequency sound waves (ultrasound) to capture internal images of the major arteries in the arms, legs and neck. Arterial duplex can show plaque buildup in arteries to help detect peripheral vascular disease (PVD).One may also ask, how is a duplex ultrasound performed? A duplex ultrasound is performed in one of our Vascular Laboratories. You will be asked to lie still on a table. The technician will apply a gel to the area of your body being examined. A transducer (ultrasound probe) is moved gently over the area being examined. Just so, what is the difference between an ultrasound and a duplex scan? A duplex ultrasound combines: Traditional ultrasound: This uses sound waves that bounce off blood vessels to create pictures. Doppler ultrasound: This records sound waves reflecting off moving objects, such as blood, to measure their speed and other aspects of how they flow.What is Doppler ultrasound scan?A Doppler ultrasound is a test that uses high-frequency sound waves to measure the amount of blood flow through your arteries and veins, usually those that supply blood to your arms and legs. Vascular flow studies, also known as blood flow studies, can detect abnormal flow within an artery or blood vessel.