NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,938 terms related to cancer and medicine.

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PET scan
(… skan)
A procedure in which a small amount of radioactive glucose (sugar) is injected into a vein, and a scanner is used to make detailed, computerized pictures of areas inside the body where the glucose is taken up. Because cancer cells often take up more glucose than normal cells, the pictures can be used to find cancer cells in the body. Also called positron emission tomography scan.