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.
When plaque builds up in the body's arteries, the condition is called atherosclerosis (ATH-er-o-skler-O-sis). Over time, plaque can harden and narrow the arteries. This limits the flow of oxygen-rich blood to your organs and other parts of your body.hen plaque builds up in the body's arteries, the condition is called atherosclerosis (ATH-er-o-skler-O-sis). Over time, plaque can harden and narrow the arteries. This limits the flow of oxygen-rich blood to your organs and other parts of your body.