Fluorine F 18 FMDHT

**Semantic type:** Indicator, Reagent, or Diagnostic Aid|Pharmacologic Substance

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

**Synonyms:** - 18F FMDHT - [7Alpha-18F]fluoro-17alpha-methyl-5alpha-dihydrotestosterone - [F-18] FMDHT