The brain scan will also show what type of stroke it is â whether it was caused by a blockage or by bleeding. In the case of an SAH, a lumbar puncture is usually carried out as well as a brain scan. This is a procedure to remove a sample of the cerebrospinal fluid that bathes the brain and spinal cord.
This can cause a blood clot that can partially or totally block the flow of blood in the artery.  Atherosclerosis is the hardening and narrowing of the arteries. It is caused by the slow buildup of plaque on the inside of walls of the arteries.Neila Rockson.his is a morbid condition. The hardening of arteries within the brain is a form of arteriosclerosis, which in most cases is atherosclerosis. The buildup of hardened scar tissue within the brain can also be caused by the demyelinating autoimmune disease multiple sclerosis.
Which is a characteristic of atherosclerosis, is a deposit of plaque on or within the arterial wall. (Ather means plaque, and -Oma means tumor) Atherosclerosis. Is hardening and narrowing of the arteries caused by a buildup of cholesterol plaque on the interior walls of the arteries. A diagnostic procedure in which a catheter is passed into a vein or artery and guided into the heart. Is the term used to describe all diseases of the heart muscle.