Radiation DosageRadiation, IonizingRadiation InjuriesScattering, RadiationDose-Response Relationship, RadiationRadiation ToleranceRadiationRadiation ProtectionRadiation MonitoringHepatocyte Growth FactorPhantoms, ImagingRadiation OncologyProto-Oncogene Proteins c-metRadiometryCosmic RadiationRadiation Injuries, ExperimentalRadiation PneumonitisGamma CamerasNeoplasms, Radiation-InducedGamma RaysRadiotherapy DosageBackground RadiationRadiotherapyCone-Beam Computed TomographyX-RaysUltraviolet RaysRadiation EffectsMonte Carlo MethodTomography, Emission-Computed, Single-PhotonTechnology, RadiologicRadiation-Sensitizing AgentsCombined Modality TherapyRadiation-Protective AgentsImage Processing, Computer-AssistedRadiotherapy, ConformalRadiotherapy Planning, Computer-AssistedArtifactsAcute Radiation SyndromeRadiographic Image EnhancementPhotonsRadioactive Hazard ReleaseLightModels, StructuralCobalt RadioisotopesRadiobiologyRadiation Hybrid MappingParticle AcceleratorsTechnetiumFlow CytometryReproducibility of ResultsDose FractionationBody BurdenTime FactorsRadiotherapy, Intensity-ModulatedGermaniumRadiographic Image Interpretation, Computer-AssistedEquipment DesignBrachytherapyTomography, X-Ray ComputedDNA DamageLinear Energy TransferRadiodermatitisWhole-Body CountingRadiographyAlgorithmsEquipment Failure AnalysisRadiotherapy, Computer-AssistedFluoroscopySensitivity and SpecificityRadiotherapy, AdjuvantRadionuclide ImagingRadiation GeneticsFilm DosimetryTomography, Emission-ComputedLeukemia, Radiation-InducedNuclear WarfareSynchrotronsRadiation, NonionizingRelative Biological EffectivenessElectromagnetic RadiationRadiopharmaceuticalsCesium RadioisotopesIodine RadioisotopesSubtraction TechniqueAbnormalities, Radiation-InducedNeoplasmsRadioisotopesBrain NeoplasmsImage EnhancementWhole-Body IrradiationSunlightThermoluminescent DosimetryCell SurvivalPositron-Emission TomographyBeta ParticlesImaging, Three-DimensionalDNA RepairNuclear WeaponsTumor Cells, CulturedComputer Simulation