TechnetiumGamma CamerasOrganotechnetium CompoundsRadionuclide ImagingTechnetium Tc 99m Sulfur ColloidTechnetium CompoundsTechnetium Tc 99m Aggregated AlbuminTechnetium Tc 99m MedronateTechnetium Tc 99m PentetateTinTechnetium Tc 99m SestamibiTechnetium Tc 99m ExametazimeSodium Pertechnetate Tc 99mScintillation CountingRadiopharmaceuticalsTomography, Emission-Computed, Single-PhotonRadioisotopesOximesTantalumTechnetium Tc 99m MertiatidePhotographyIodine RadioisotopesTissue DistributionKryptonPentetic AcidGastric EmptyingIndiumTechnetium Tc 99m Dimercaptosuccinic AcidRadioimmunodetectionIsotope LabelingRheniumXenon RadioisotopesRadioisotope RenographyErythrocyte InclusionsIndium RadioisotopesTin PolyphosphatesVentriculography, First-PassDiphosphatesSoil Pollutants, RadioactiveTechnetium Tc 99m Diethyl-iminodiacetic AcidTin CompoundsWhole-Body CountingTomography, Emission-ComputedRosaniline DyesModels, StructuralPhantoms, ImagingHeartTechnetium Tc 99m LidofeninAmericiumTechnology, RadiologicEvaluation Studies as TopicEtidronic AcidThalliumIodohippuric AcidRadionuclide GeneratorsOrganometallic CompoundsSensitivity and SpecificitySugar AcidsMercury RadioisotopesPhosphinesGold Colloid, RadioactiveTelluriumOrganophosphorus CompoundsAerosolsTechnetium Tc 99m DisofeninTechnetium Tc 99m PyrophosphateImage Processing, Computer-AssistedEquipment Failure AnalysisEquipment DesignTime FactorsMiniaturizationRadiation DosageMucociliary ClearanceLungGamma RaysNitrilesDogsVideo RecordingFluorodeoxyglucose F18Gated Blood-Pool ImagingRadioimmunotherapyThallium RadioisotopesComputersSentinel Lymph Node BiopsyIodobenzenesRadiometryReproducibility of ResultsAntibodies, MonoclonalCalibrationArtifactsNebulizers and VaporizersImage EnhancementQuality ControlErythrocytesMethodsMetabolic Clearance RateCarcinoma, MedullaryBrainAbscessInterferon-gamma