Dose-Response Relationship, DrugRadiation DosageTime FactorsDose-Response Relationship, RadiationRadiation InjuriesRadiation, IonizingRadiation ProtectionRadiation MonitoringRadiometryRadiation ToleranceRadiationNeoplasms, Radiation-InducedRadiotherapy DosageBody BurdenThermoluminescent DosimetryRadiation OncologyGamma RaysCosmic RadiationRadiotherapyRadiation Injuries, ExperimentalRelative Biological EffectivenessRadiation PneumonitisRadioactive FalloutBackground RadiationFluoroscopyRadioactive Hazard ReleaseRadiography, InterventionalNuclear WeaponsRadiotherapy, ConformalTomography, X-Ray ComputedNuclear WarfareCombined Modality TherapyCesium RadioisotopesRadiation-Sensitizing AgentsRadioisotopesRadiation EffectsLeukemia, Radiation-InducedRadiotherapy Planning, Computer-AssistedPhantoms, ImagingUltraviolet RaysRadiotherapy, Intensity-ModulatedRadiation-Protective AgentsDose FractionationFilm DosimetryCobalt RadioisotopesRadioimmunotherapyRadiographic Image Interpretation, Computer-AssistedAcute Radiation SyndromeX-RaysIodine RadioisotopesBrachytherapyYttrium RadioisotopesRadiographic Image EnhancementWhole-Body CountingTechnology, RadiologicRadiobiologyLinear Energy TransferTreatment OutcomeBeta ParticlesNuclear MedicinePlutoniumOxytropisCardiac-Gated Imaging TechniquesChernobyl Nuclear AccidentUkraineDNA DamageRadiographyRadiodermatitisRadiotherapy, AdjuvantRadiopharmaceuticalsNeoplasmsNuclear ReactorsOrgans at RiskSoil Pollutants, RadioactivePower PlantsOccupational ExposureWhole-Body IrradiationRadiosurgeryRadiotherapy, High-EnergyRetrospective Studies