BSIP BERANGER / SCIENCE PHOTO LIBRARY BSIP BERANGER / SCIENCE PHOTO LIBRARY
Radiotherapy. A woman lies aligned on a table next to a radiotherapy machine (left) prior to radio- therapy treatment for cancer. Behind her is a compass dial used to control the position of the machine, which can rotate around the patient. Radiotherapy destroys cancer tissue by passing a beam of intense radiation (such as X-rays) through the tumour. The beam is aimed from several different angles, each time striking the tumour but passing through a different part of the body. This minimises damage to surrounding tissue. The procedure is painless and takes just several minutes. Side-effects like nausea and fatigue may develop later.
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