GEOFF TOMPKINSON / SCIENCE PHOTO LIBRARY GEOFF TOMPKINSON / SCIENCE PHOTO LIBRARY
CT brain scanner. A radiographer aligns the position of a patient's head during a Computer Tomography (CT) brain scan. CT scanners use X-rays to take cross-sectional views of the subject from different angles to 'map' the area under study. A series of X-ray 'slices' of different cross-sections of the head may be generated so that the whole of the brain may be studied.
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