NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 7,777 terms related to cancer and medicine.
Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related word or phrase in the search box.
- listen (... KOH-leen)
- A radioactive substance being studied in PET imaging to detect certain types of cancer. 18F-choline gets taken up by cells in the body and more of it is taken up by tumor cells than by normal cells. A PET scanner is used to detect which cells in the body have taken up 18F-choline. It is a type of radioimaging agent. Also called 18F-fluoromethylcholine, 18F-FMCH, and fluorine F 18 fluoromethylcholine.