K H FUNG / SCIENCE PHOTO LIBRARY K H FUNG / SCIENCE PHOTO LIBRARY
Stroke due to blood clot. The scan shows an abrupt occlusion of the M2 segment of the right middle cerebral artery (at left) due to an abnormal blood clot (thrombosis). A stroke is where the brain is damaged due to hypoxia (lack of oxygen). This is usually due to an interruption or other damage to the blood supply, in this case a clot blocking the blood flow to the brain.
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