DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Brain in stroke. Magnetic resonance imaging (MRI) scan of an axial section through the brain of an 80-year-old male patient following a stroke. A stroke, or cerebrovascular accident (CVA), is the rapid loss of brain function due to a disturbance in the blood supply to the brain. An ischaemic stroke is caused by a reduction in the blood supply to an area of the brain.
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