Glossary of Medical Terms

fluorine F 18 fluoromethylcholine

A radioactive substance being studied in PET imaging to detect certain types of cancer. Fluorine F 18 fluoromethylcholine 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 fluorine F 18 fluoromethylcholine. It is a type of radioimaging agent. Also called 18F-choline, 18F-fluoromethylcholine, and 18F-FMCH.

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