Radionuclide ImagingRadionuclide AngiographyRadioisotopesRadionuclide VentriculographyTechnetiumRadionuclide GeneratorsCesium RadioisotopesWater Pollutants, RadioactiveSodium Pertechnetate Tc 99mStrontium RadioisotopesGated Blood-Pool ImagingSoil Pollutants, RadioactiveRadiopharmaceuticalsRadiometryRadioactivityRheniumAlpha ParticlesVentriculography, First-PassPentetic AcidPlutoniumRadiation DosageRadioimmunotherapyIodine RadioisotopesIndium RadioisotopesFood Contamination, RadioactiveSensitivity and SpecificityYttrium RadioisotopesBeta ParticlesRadiation MonitoringGold RadioisotopesGallium RadioisotopesTomography, Emission-Computed, Single-PhotonHolmiumAstatineSpectrometry, GammaRadioactive FalloutDiagnostic ErrorsStroke VolumeDiagnostic ImagingRadioactive PollutantsRadioactive WastePoloniumLutetiumActiniumDiagnostic Tests, RoutineTechnetium Tc 99m Aggregated AlbuminTechnetium Tc 99m MedronateDiagnostic Techniques and ProceduresThoriumOrganometallic CompoundsTechnetium Tc 99m Sulfur ColloidTechnetium CompoundsCineangiographyReproducibility of ResultsPotassium RadioisotopesCopper RadioisotopesOctreotideHeterocyclic Compounds, 1-RingRadiobiologyRadioisotope RenographyHeartRadioactive Hazard ReleaseAngiocardiographyIndiumTin CompoundsGamma CamerasSamariumTomography, X-Ray ComputedOrganotechnetium CompoundsTechnetium Tc 99m PentetateNuclear MedicinePositron-Emission TomographyThalliumIsotope LabelingAmericiumFukushima Nuclear AccidentBody BurdenPredictive Value of TestsTissue DistributionDose-Response Relationship, RadiationNeuroendocrine TumorsRadiotherapy DosageTechnetium Tc 99m SestamibiRadiumNuclear ReactorsReagent Kits, Diagnostic3-IodobenzylguanidineWhole-Body CountingTechnology, RadiologicRadioimmunodetection19-IodocholesterolCardiac VolumeVentricular Function, LeftHeart VentriclesTime FactorsRelative Biological EffectivenessUraniumPower PlantsProspective StudiesROC Curve