A carotid artery duplex scan is a test that uses sound waves to image the blood flow to your brain. The carotid arteries are examined to check for carotid artery stenosis (blockage or narrowing of the arteries supplying the brain).
Why you are having this procedure (symptoms/indications):
Your doctor may have ordered a carotid duplex scan to evaluate changes in your vision or speech. You may have dizziness or weakness on one side of your body. Your test may have been ordered because you have an abnormal sound to your carotid arteries (bruit) or you may have known or suspected carotid artery stenosis.
Prep for the procedure:
There is no preparation for the test.
What to expect:
You will be asked to lie on your back during the test. You may be asked to change positions during the test. The lights in the room will be dim. The sonographer will place a probe (ultrasound transducer) with gel on it on your neck. The probe will be moved around on your neck to see different views of your carotid arteries. The test will take about 30 minutes to complete.
There are no known risks associated with this test.
Post procedure instructions/limitations:
You may resume your normal activities immediately following the test.