A Duplex ultrasound is a simple office test to show how blood flows to many parts of the body. It can also tell the width of a blood vessel and reveal any blockages. It combines traditional ultrasound with Doppler ultrasound. Traditional ultrasound uses sound waves that bounce off blood vessels to create pictures. Doppler ultrasound records sound waves reflecting off moving objects, such as blood, to measure their speed and other aspects of how they flow.
There are different types of ultrasound exams performed at The Huntington Heart Center like Carotid, Renal and Extremities
A duplex ultrasound can help diagnose the following conditions:
- Arterial occlusion
- Blood clot
- Carotid occlusive disease
- Renal vascular disease
- Varicose veins
- Venous insufficiency
What To Expect:
There is no preparation for a duplex ultrasound. You may need to wear a medical gown. The ultrasound technician will spread a gel over the area being tested. The gel helps to conduct the sound waves through your tissues. A wand, called a transducer, is positioned over the area being examined. This wand sends out the sound waves. A computer measures how the sound waves reflect back, and changes the sound waves into pictures. The Doppler creates a “swishing” sound, which is the sound of your blood moving through the arteries and veins. You need only to stay still during the exam. Most scans take 15-20 minutes.