F-18 16 alpha-fluoroestradiol
Cancer
(⦠AL-fuh-FLOOR-oh-es-truh-DY-ol) A radiolabeled substance being studied as an imaging agent in breast cancer. F-18 16 alpha-fluoroestradiol binds to estrogen receptors and gives off radiation that can be detected by a PET scan. The PET scan forms an image that shows where cancer cells with estrogen receptors can be found in the body. It is a type of radioimaging agent. Also called F-18 FES.