Atherosclerosis (degenerative disease of blood vessels) affecting the carotid arteries (arteries supplying the neck and brain) can result in patients experiencing major stroke. When diagnosed to have significant critical blockage of these neck arteries, the treatment may be a carotid artery stenting or carotid endaterectomy. Carotid endaterectomy is a surgery where the neck artery is opened and the calcific plaque blocking the artery is surgically removed. In doing so, normal blood flow is restored to neck artery and thereby to the brain. After this procedure, patient is at very low risk of having a stroke.