Fluorine F 18 FDHT

**Semantic type:** Pharmacologic Substance

**Definition:** A radioconjugate containing a derivative of the androgen testosterone, 16-beta-fluoro-5-alpha-dihydrotestosterone (FDHT), labeled with the radioisotope fluorine F18 (18F-FDHT), with potential use as an imaging agent for positron emission tomography (PET). Upon administration, 18F-FDHT binds to the androgen receptor (AR). Upon PET imaging, AR-expressing prostate tumor cells can be imaged and assessed.

**Synonyms:** - (18)F-16beta-Fluoro-5alpha-Dihydrotestosterone - (18)F-FDHT - 16Beta-18F-Fluoro-5alpha-Dihydrotestosterone - 18F-FDHT - Fluorine F 18 16-Beta-Fluoro-5-Alpha-Dihydrotestosterone - Fluorine F 18-FDHT - Fluorine F18 16-Beta-Fluoro-5-Alpha-Dihydrotestosterone - Fluorine F18-FDHT