Sometimes during a duplex ultrasound of the legs, the health care provider may calculate an ankle-brachial index (ABI). The Doppler creates a "swishing" sound, which is the sound of your blood moving through the arteries and veins. A computer measures the reflection and changes in the sound waves, then uses that information to create pictures. Renal duplex ultrasound examines kidneys and their blood vessels.Ī wand, called a transducer, is moved over the area being tested, sending out sound waves.ĝuplex ultrasound of the extremities looks at arms or legs.Ĝarotid duplex ultrasound looks at the carotid artery in the neck.Ěrterial and venous duplex ultrasound of the abdomen, which examines blood vessels and blood flow in the abdominal area.There are different types of duplex ultrasound exams. Doppler ultrasound: records sound waves reflecting off moving objects, such as blood, to measure their speed and other aspects of how they flow.Traditional ultrasound: uses sound waves that bounce off blood vessels to create pictures.
How the Test Is PerformedĪ duplex ultrasound combines two types of ultrasound: The term "duplex" refers to the fact that two modes of ultrasound are used, Doppler and B-mode. Fortunately, there is a piece of equipment that assists in detecting issues like deep vein thrombosis: the duplex ultrasound! Read below to learn more about what a duplex ultrasound is and how it helps with the diagnosis of poor leg circulation.ĭuplex ultrasound uses high-frequency sound waves to look at the speed of blood flow and structure of the leg veins. Poor leg circulation is a dangerous situation that many people will experience in their life.
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