A Carotid ultrasound is done to detect plaque buildup in one or both of the carotid arteries in the neck and to see whether the buildup is narrowing your carotid arteries and blocking blood flow to the brain. Test results will help your doctor plan treatment.
You will lie on your back on an exam table for your test. The ultrasound sonographer will put gel on your neck where your carotid arteries are located. The gel helps the sound waves reach your arteries. The sonographer will move the transducer against different areas on your neck. The transducer will detect the sound waves after they have bounced off your artery walls and blood cells. The ultrasound system will use the sound waves to create and record pictures of the inside of your carotid arteries and to show how blood is flowing in your carotid arteries.