Fluorine F 18 Para-chloro-2-fluoroethyl-etomidate

**Semantic type:** Pharmacologic Substance

**Definition:** A radioconjugate composed of para-chloro-2-fluoroethyletomidate (CETO) conjugated to the radioisotope fluorine F 18 (18F), with potential application in adrenal imaging during positron emission tomography/computed tomography (PET/CT). Upon administration of [18F]CETO, the CETO moiety targets, binds to and is taken up by the adrenocortical cells located on the adrenal glands. Upon PET/CT, primary aldosteronism and adrenal tumors, such as cortisol producing adrenocortical adenoma and non-functioning adrenocortical carcinoma, can be visualized and detected during PET/CT imaging.

**Synonyms:** - F18-CETO - Para-chloro-2-[18F]fluoroethyl-etomidate - [18F]CETO