Radiation DosageDose-Response Relationship, RadiationRadiation InjuriesGamma RaysRadiotherapy DosageRadiotherapyRadiation, IonizingRadiotherapy, ConformalRadiotherapy, Intensity-ModulatedCombined Modality TherapyRadiation ToleranceDose FractionationRadiation OncologyRadiotherapy Planning, Computer-AssistedRadiotherapy, AdjuvantRadiationBrachytherapyRadiation ProtectionRadiation PneumonitisRadiosurgeryRadiation MonitoringRadiometryTreatment OutcomeRadiotherapy, Computer-AssistedCranial IrradiationRadiotherapy, Image-GuidedNeoplasms, Radiation-InducedRadiation-Sensitizing AgentsNeoplasm Recurrence, LocalBrain NeoplasmsParticle AcceleratorsOrgans at RiskRadiation Injuries, ExperimentalHead and Neck NeoplasmsRadiotherapy, High-EnergyNeoplasm StagingRadiodermatitisProstatic NeoplasmsRetrospective StudiesAntineoplastic Combined Chemotherapy ProtocolsChemoradiotherapyRadiation-Protective AgentsSurvival AnalysisTime FactorsCosmic RadiationDisease-Free SurvivalCarcinoma, Squamous CellSurvival RateFollow-Up StudiesTomography, X-Ray ComputedMastectomy, SegmentalNeoplasmsCobalt RadioisotopesBreast NeoplasmsChemotherapy, AdjuvantFour-Dimensional Computed TomographyAdenocarcinomaBackground RadiationLymphatic IrradiationActuarial AnalysisPrognosisLung NeoplasmsTumor BurdenCisplatinRadiobiologyAntineoplastic AgentsBrain Stem NeoplasmsUltraviolet RaysRelative Biological EffectivenessGlioblastomaRectal NeoplasmsHodgkin DiseaseDrug Administration ScheduleFluorouracilRadiation EffectsRadiotherapy Setup ErrorsX-RaysDacarbazineNeoplasms, Second PrimaryCerebellar NeoplasmsPhantoms, ImagingSarcomaMastectomyPelvic NeoplasmsProstate-Specific AntigenNasopharyngeal NeoplasmsGlottisAndrogen AntagonistsProton TherapyIridium RadioisotopesCone-Beam Computed TomographyCarcinoma, Non-Small-Cell LungGliomaMechlorethaminePhotonsLinear Energy TransferLaryngeal NeoplasmsBeta ParticlesOsteoradionecrosisKarnofsky Performance Status