Questions About Cancer? 1-800-4-CANCER
  • Print
  • Facebook
  • Twitter
  • Google+
  • Pinterest

NCI Dictionary of Cancer Terms


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