Like the blood vessels of the heart (coronary arteries), the carotid arteries also develop atherosclerosis, the build-up of fat and cholesterol deposits, called plaque, on the inside of the arteries. Over time, the build-up narrows the artery, decreases blood flow to the brain and can lead to a stroke. Read more about carotid artery disease.

What is carotid angiography?

Carotid angiography, also called carotid angio or an arteriogram, is an invasive X-ray imaging procedure used to detect the presence of narrowing or blockage (atherosclerosis) in the carotid arteries and determine your risk for future stroke.

Carotid angiography may be performed when carotid artery disease is suspected, based on the results of other tests, such as a carotid duplex ultrasound, computed tomography angiogram (CTA) or magnetic resonance angiogram (MRA).