CHRIS PRIEST / SCIENCE PHOTO LIBRARY CHRIS PRIEST / SCIENCE PHOTO LIBRARY
Woman patient undergoing mammography examination, showing the positioning for a right magnification view (x1.5). Mammography is an X-ray technique which reveals fine details of internal breast tissues; its main application is in the early detection of breast cancer. To obtain an image, the breast is compressed into a relatively flat plane between two plastic sheets before exposing the tissues to X-rays. Small tumours detected at an early stage may sometimes be treated in a conservative manner without resort to a mastectomy, the removal of the whole breast. Photographed at King's College Hospital, London.
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