OximesCholinesterase ReactivatorsTechnetium Tc 99m ExametazimeObidoxime ChlorideOrganophosphate PoisoningAntidotesChemical Warfare AgentsOrganophosphatesCholinesterase InhibitorsAcetylcholinesteraseSarinOrganotechnetium CompoundsPyridinium CompoundsParaoxonHydroxylaminesTomography, Emission-Computed, Single-PhotonBoranesButyrylcholinesteraseChemical ProcessesOrganophosphorus Compounds