Carotid artery disease, also called carotid artery stenosis, occurs when the carotid arteries, the main blood vessels that carry oxygenated blood to the brain, become narrowed. The narrowing of the ...

What is carotid artery disease ... This test uses a special kind of X-ray called a CT scan. Before having the scan, people get an injection of a dye that makes the arteries show up more clearly.