Carotid Doppler Ultrasound is a non-invasive test that uses sound waves to measure the flow of blood through the large carotid arteries that supply blood to the brain. These arteries can narrow due to arteriosclerosis or other causes and this can lead to TIA (mini-stroke) or CVA (stroke). This test can help doctors to determine stroke risk and help determine preventive measures.
Who needs a Carotid Doppler procedure?
Carotid doppler ultrasound scanning is used to evaluate
the risk of stroke in patients who have a history of
stroke or are believed to be at high risk.
How do I prepare for a Carotid Doppler procedure?
There are no special preparations for this procedure.
How is a Carotid Doppler procedure performed?
A carotid doppler ultrasound scan takes about 15 to 30
minutes, although times may vary. To perform this test,
the healthcare professional will first squirt a clear
jelly on one side of your neck. He or she will then place
a sensor that looks like a wand or a microphone on the
jelly. The jelly makes it easy for the ultrasound sensor
to slide against your skin. As the healthcare professional
moves the sensor around on your neck, a picture appears on
a monitor. This picture shows the different rates of blood
flow through the arteries. This procedure will then be
repeated for the other side of your neck. Any narrowing of
the carotid arteries will show up as an area of reduced
blood flow. Narrowed carotid arteries are a leading cause
of stroke.
What can I expect after a Carotid Doppler procedure?
When the procedure is complete, the healthcare
professional will wipe off the jelly and you will be free
to resume your normal activities. This test has no side
effects. Your doctor will receive a report of the test
results and notify you.