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NCI Dictionary of Cancer Terms

single-photon emission computed tomography  listen  (SIN-gul-FOH-ton ee-MIH-shun kum-PYOO-ted toh-MAH-gruh-fee)

  A special type of computed tomography (CT) scan in which a small amount of a radioactive drug is injected into a vein and a scanner is used to make detailed images of areas inside the body where the radioactive material is taken up by the cells. Single-photon emission computed tomography can give information about blood flow to tissues and chemical reactions (metabolism) in the body. Also called SPECT.