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NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 8,188 terms related to cancer and medicine.

We offer a widget that you can add to your website to let users look up cancer-related terms. Get NCI’s Dictionary of Cancer Terms Widget.

fluorine F 18-fluoromethylcholine
(FLOOR-een … FLOOR-oh-MEH-thul-KOH-leen)
A radioactive substance being studied in positron emission tomography (PET) imaging to find certain types of cancer. Fluorine F 18-fluoromethylcholine gets taken up by cells in the body and more of it is taken up by cancer cells than by normal cells. A PET scanner is used to find which cells in the body have taken up fluorine F 18-fluoromethylcholine. Also called 18F-choline, 18F-fluoromethylcholine, and 18F-FMCH.