Radiotherapy, Intensity-ModulatedRadiation InjuriesRadiotherapy DosageRadiotherapy Planning, Computer-AssistedRadiation DosageRadiotherapy, ConformalRadiotherapyDose-Response Relationship, RadiationRadiation, IonizingRadiation OncologyCombined Modality TherapyDose FractionationRadiation ToleranceRadiometryOrgans at RiskRadiotherapy, AdjuvantBrachytherapyRadiationParticle AcceleratorsRadiation ProtectionRadiotherapy, Computer-AssistedRadiotherapy, Image-GuidedRadiosurgeryRadiation PneumonitisRadiation MonitoringHead and Neck NeoplasmsTreatment OutcomeCranial IrradiationNeoplasm Recurrence, LocalNeoplasms, Radiation-InducedBrain NeoplasmsRadiation-Sensitizing AgentsProstatic NeoplasmsRadiodermatitisRadiotherapy, High-EnergyNeoplasm StagingChemoradiotherapyRadiation Injuries, ExperimentalRetrospective StudiesGamma RaysCarcinoma, Squamous CellRhodobacter capsulatusNasopharyngeal NeoplasmsLymphatic IrradiationTomography, X-Ray ComputedTumor BurdenAntineoplastic Combined Chemotherapy ProtocolsDisease-Free SurvivalFollow-Up StudiesMastectomy, SegmentalRadiation-Protective AgentsXerostomiaSurvival AnalysisCosmic RadiationSurvival RateFilm DosimetryPhantoms, ImagingChemotherapy, AdjuvantBreast NeoplasmsNeoplasmsTime FactorsCobalt RadioisotopesProton TherapyAdenocarcinomaPelvic NeoplasmsPrognosisPhotonsLung NeoplasmsActuarial AnalysisFour-Dimensional Computed TomographyBackground RadiationRelative Biological EffectivenessOsteoradionecrosisRectal NeoplasmsRadiobiologyNeoplasms, Second PrimaryCone-Beam Computed TomographyGlioblastomaOropharyngeal NeoplasmsCerebellar NeoplasmsBrain Stem NeoplasmsLaryngeal NeoplasmsSarcomaThoracic NeoplasmsFluorouracilFeasibility StudiesAntineoplastic AgentsSpinal NeoplasmsHodgkin DiseaseRectumRadiotherapy Setup ErrorsImaging, Three-DimensionalAndrogen AntagonistsUltraviolet RaysDacarbazineRadiation EffectsMastectomyGlottisProstate-Specific AntigenX-Rays