CNRI / SCIENCE PHOTO LIBRARY CNRI / SCIENCE PHOTO LIBRARY
Bone scan of upper body. Coloured radionuclide bone scan (gamma scan) of a patient's upper body. This image was made with a gamma camera, which detects gamma rays emitted by a radioactive tracer that concentrates in bone. The tracer is injected into the body before the scan is made and consists of a phosphate complex linked to the radioactive isotope technetium-99m. Bone scans are often used to screen cancer patients for evidence of secondary disease after treatment for primary cancer. Bone metastases (secondary bone cancers) absorb the tracer in greater amounts than normal bone and show up as hot spots on the image.
Model release not required. Property release not required.