CNRI / SCIENCE PHOTO LIBRARY CNRI / SCIENCE PHOTO LIBRARY
False colour bone scintigram (gamma camera scan) of a frontal view of skeleton of a person suffering from secondary (metastatic) bone cancer affecting a vertebra in the thoracic spine, which appears as a white area towards left of upper spine. The image displays the distribution & intensity of gamma radiation emitted from a radionuclide that is injected into the body prior to taking the scan and which concentrates in bone. A crystal scintillator resolves emitted radiations as flashes of light, which are processed by a series of photomultiplier tubes. Cancerous bone concentrates the radionuclide more strongly than normal bone, and appears as brighter, "hot spots".
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