RadiotherapyRadiotherapy DosageRadiotherapy, ConformalRadiotherapy, AdjuvantRadiotherapy, Intensity-ModulatedRadiotherapy Planning, Computer-AssistedRadiotherapy, High-EnergyCombined Modality TherapyDose FractionationRadiation InjuriesRadiotherapy, Computer-AssistedRadiotherapy, Image-GuidedTreatment OutcomeDose-Response Relationship, RadiationRadiation OncologyBrachytherapyRadiosurgeryHead and Neck NeoplasmsNeoplasm Recurrence, LocalRadiation DosageNeoplasm StagingAntineoplastic Combined Chemotherapy ProtocolsChemoradiotherapyRadiometryDisease-Free SurvivalBrain NeoplasmsOrgans at RiskCarcinoma, Squamous CellRadiation ToleranceRetrospective StudiesNasopharyngeal NeoplasmsSurvival RateTime FactorsLung NeoplasmsSurvival AnalysisFollow-Up StudiesRadiation-Sensitizing AgentsCisplatinRectal NeoplasmsDrug Administration ScheduleChemotherapy, AdjuvantPrognosisParticle AcceleratorsCranial IrradiationProstatic NeoplasmsAntineoplastic AgentsNeoplasms, Radiation-InducedNeoplasmsRadiation PneumonitisBreast NeoplasmsVincristineTomography, X-Ray ComputedHodgkin DiseasePelvic NeoplasmsRadioisotope TeletherapyFluorouracilMastectomy, SegmentalLaryngeal NeoplasmsRadiodermatitisDacarbazineHeavy Ion RadiotherapyDose-Response Relationship, DrugNeoplasms, Second PrimaryIridium RadioisotopesOrgan Sparing TreatmentsXerostomiaProcarbazineCobalt RadioisotopesNeoadjuvant TherapyAdenocarcinomaAdministration, OralCyclophosphamideProspective StudiesPalliative CareCarcinoma, Non-Small-Cell LungRadiation-Protective AgentsSpinal NeoplasmsDoxorubicinMechlorethamineCarcinomaUterine Cervical NeoplasmsLymphatic IrradiationAntineoplastic Agents, AlkylatingSalvage TherapyGlioblastomaBleomycinKaplan-Meier EstimateFeasibility StudiesThoracic NeoplasmsGliomaRemission InductionTumor BurdenVinblastinePelvisPrednisoneMastectomySarcomaLymphatic MetastasisEsophageal NeoplasmsRadiation, Ionizing