RadiotherapyRadiotherapy DosageRadiotherapy, AdjuvantRadiotherapy, ConformalCombined Modality TherapyRadiotherapy, Intensity-ModulatedRadiotherapy Planning, Computer-AssistedRadiotherapy, High-EnergyDose FractionationRadiation InjuriesRadiotherapy, Computer-AssistedRadiotherapy, Image-GuidedTreatment OutcomeRadiation OncologyRadiosurgeryBrachytherapyDose-Response Relationship, RadiationHead and Neck NeoplasmsNeoplasm Recurrence, LocalNeoplasm StagingChemoradiotherapyAntineoplastic Combined Chemotherapy ProtocolsRetrospective StudiesBrain NeoplasmsNasopharyngeal NeoplasmsCarcinoma, Squamous CellDisease-Free SurvivalSurvival RateRadiation ToleranceFollow-Up StudiesOrgans at RiskSurvival AnalysisLung NeoplasmsRadiation-Sensitizing AgentsPrognosisTomography, X-Ray ComputedRectal NeoplasmsChemotherapy, AdjuvantCisplatinParticle AcceleratorsCranial IrradiationRadiometryProstatic NeoplasmsRadiation DosageRadiation PneumonitisBreast NeoplasmsPelvic NeoplasmsHodgkin DiseaseTime FactorsLaryngeal NeoplasmsHeavy Ion RadiotherapyMastectomy, SegmentalVincristineNeoplasmsNeoplasms, Radiation-InducedProcarbazineNeoplasms, Second PrimaryRadiodermatitisAntineoplastic AgentsDacarbazineOrgan Sparing TreatmentsFluorouracilNeoadjuvant TherapyXerostomiaMagnetic Resonance ImagingRadioisotope TeletherapySpinal NeoplasmsAdenocarcinomaMechlorethaminePositron-Emission TomographyPalliative CareCarcinoma, Non-Small-Cell LungCarcinomaProspective StudiesGlioblastomaCobalt RadioisotopesUterine Cervical NeoplasmsLymphatic IrradiationKaplan-Meier EstimateRadiopharmaceuticalsRadiation-Protective AgentsSalvage TherapyEsophageal NeoplasmsFeasibility StudiesGliomaPelvisBleomycinLymphatic MetastasisMastectomyDoxorubicinThoracic NeoplasmsOsteoradionecrosisAntineoplastic Agents, AlkylatingTumor BurdenIridium RadioisotopesSarcomaFiducial MarkersCyclophosphamidePatient PositioningVinblastine