Stroke, angiogram
Stroke. Coloured angiogram of the brain of a 48 year old patient after a massive cerebrovascular accident (CVA), or stroke. There are fewer blood vessels visible compared to normal (see image M136/0347). This is due to a blocked middle cerebral artery causing areas of ischaemia (lack of blood flow) to parts of the brain. 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. Symptoms can include muscle weakness, behavioural changes or paralysis. Angiograms use a contrast dye to highlight blood vessels.
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