The gamma camera.
D002717:Chlormerodrin; D003201:Computers; D006801:Humans; D007456:Iodine Isotopes; D007465:Iodohippuric Acid; D007674:Kidney Diseases / Q000175:diagnosis*; D008629:Mercury Isotopes; D010781:Photography; D011877:Radionuclide Imaging / Q000295:instrumentation*
D007456:Iodine Isotopes; D008629:Mercury Isotopes; D007465:Iodohippuric Acid; D002717:Chlormerodrin