SCOTT CAMAZINE / SCIENCE PHOTO LIBRARY SCOTT CAMAZINE / SCIENCE PHOTO LIBRARY
Brain haemorrhage. Coloured computed tomography (CT) scan of an axial section through the head of a 66-year-old female showing a haemorrhage (red) in the left posterior temporal lobe of the brain. This occurs when an injury causes bleeding between the meninges (membranes that surround the brain). The blood rapidly clots to form a solid mass that exerts pressure on the brain. Haemorrhage is usually caused by an impact to the head. It is more common in the elderly as blood vessels become more fragile with age. Treatment is usually by the surgical removal of the clot. CT scans use X-rays to image sections of the body.
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