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.
Atherosclerosis, or hardening of the arteries, is a condition in which plaque builds up inside the arteries.Plaque is made of cholesterol, fatty substances, cellular waste products, calcium and fibrin (a clotting material in the blood).Atherosclerosis is a type of arteriosclerosis.therosclerosis, or hardening of the arteries, is a condition in which plaque builds up inside the arteries.
The term Atherosclerosis literally means hardening from atheroma. In a he â¦ althy person, the artiers have walls that are muscular, smooth and elastic enough to allow for variations in blood pressure, which allows the blood to pass through freely.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.