Gamma CamerasRadionuclide ImagingPhotonsTomography, Emission-Computed, Single-PhotonPhotographyTechnetiumRadiopharmaceuticalsTechnetium Tc 99m MedronateSodium Pertechnetate Tc 99mScintillation CountingIndium RadioisotopesThalliumVideo RecordingGallium Radioisotopes3-IodobenzylguanidineOrganotechnetium Compounds