Stroke, CT scan - stock photo

Computed tomography (CT) scan of the head of a patient after a cerebrovascular accident (CVA, or stroke). An infarct (area of dead tissue, darker) is seen in the cerebellum. The infarct is a result of ischaemia, a lack of blood flow to that area of the brain, caused by a blockage in a blood vessel. The blockage may be due to a thrombus (blood clot) or embolism (air bubble or loose blood clot). Strokes can be instantly fatal, or may pass unnoticed. This patient presented with vertigo