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NCI Drug Dictionary

  

[F-18]HX4 
A 2-nitroimidazole labeled with the positron-emitting radioisotope fluorine F 18. HX4, the 2-nitroimidazole moiety of [F-18]HX4, is selectively bioreduced and bound in hypoxic tumor cells, permitting the imaging of hypoxic tumor cells with positron emission tomography (PET). Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)