Radiation DosageRadiation, IonizingRadiation InjuriesDose-Response Relationship, RadiationRadiationRadiation ToleranceRadiation ProtectionRadiation MonitoringPositron-Emission TomographyRadiation OncologyOtoacoustic Emissions, SpontaneousTomography, Emission-ComputedCosmic RadiationRadiation Injuries, ExperimentalRadiation PneumonitisRadiopharmaceuticalsFluorodeoxyglucose F18Neoplasms, Radiation-InducedGamma RaysVehicle EmissionsRadiotherapyBackground RadiationRadiometryRadiotherapy DosageTomography, Emission-Computed, Single-PhotonUltraviolet RaysRadiation EffectsCombined Modality TherapyRadiation-Sensitizing AgentsRadiation-Protective AgentsTomography, X-Ray ComputedFluorine RadioisotopesAcute Radiation SyndromeGreenhouse EffectCobalt RadioisotopesX-RaysRadioactive Hazard ReleaseRadiobiologyRadiotherapy, ConformalSpectrometry, FluorescenceRadiation Hybrid MappingDose FractionationTime FactorsRadiotherapy, Intensity-ModulatedPower PlantsRadiotherapy Planning, Computer-AssistedDNA DamageMultimodal ImagingBrachytherapyCarbon FootprintLinear Energy TransferRadioisotopesRadiodermatitisAir PollutantsRadiotherapy, AdjuvantAtmosphereBody BurdenBrainMethaneTechnology, RadiologicRadiation GeneticsSynchrotronsElectromagnetic RadiationLeukemia, Radiation-InducedPhantoms, ImagingNuclear WarfareParticle AcceleratorsRelative Biological EffectivenessTreatment OutcomeRadiation, NonionizingCarbon RadioisotopesBrain NeoplasmsMagnetic Resonance ImagingPhotonsCesium RadioisotopesSensitivity and SpecificityNeoplasmsThermoluminescent DosimetryBeta ParticlesSunlightEnvironmental MonitoringFluoroscopyInfrared RaysAbnormalities, Radiation-InducedVolatilizationPentanesWhole-Body IrradiationHead and Neck NeoplasmsIodine RadioisotopesDNA RepairNeoplasm StagingRadiosurgeryNuclear WeaponsCell SurvivalRadiographyRetrospective StudiesLuminescenceSpectrometry, X-Ray EmissionFluorescenceScattering, Radiation