Stroke. Coloured computed tomography (CT) scans of an axial section through the head of a 62-year-old patient with a stroke. The front of the brain is at top and the right hemisphere is seen at left. A large infarct (dead tissue,dark patch at right) is seen in the sylvian fissure of the left hemisphere. The infarct is a result of ischaemia,a lack of blood flow caused by a blood vessel obstruction. 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 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Zephyr |
Bildgröße: | 3397 px × 4016 px |
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