Radiation DosageTomography, X-Ray ComputedRadiation ProtectionDose-Response Relationship, RadiationRadiation InjuriesRadiometryRadiation, IonizingRadiation MonitoringBody BurdenRadiotherapy DosageRadiation ToleranceNeoplasms, Radiation-InducedThermoluminescent DosimetryRadiationFluoroscopyRelative Biological EffectivenessRadiography, InterventionalRadiotherapyGamma RaysNuclear WeaponsRadioactive Hazard ReleaseRadiation OncologyCosmic RadiationNuclear WarfareRadioisotopesRadioactive FalloutCesium RadioisotopesPhantoms, ImagingRadiotherapy, ConformalRadiation Injuries, ExperimentalRadiation PneumonitisBackground RadiationRadiotherapy Planning, Computer-AssistedFilm DosimetryRadiographic Image Interpretation, Computer-AssistedRadioimmunotherapyCombined Modality TherapyRadiographic Image EnhancementRadiotherapy, Intensity-ModulatedYttrium RadioisotopesDose FractionationWhole-Body CountingRadiation-Sensitizing AgentsIodine Radioisotopes