Radiotherapy DosageRadiotherapyRadiation InjuriesRadiotherapy, ConformalRadiotherapy, AdjuvantRadiation DosageRadiation, IonizingDose-Response Relationship, RadiationRadiotherapy, Intensity-ModulatedCombined Modality TherapyRadiotherapy Planning, Computer-AssistedRadiation ToleranceRadiotherapy, High-EnergyRadiation OncologyDose FractionationRadiationRadiotherapy, Computer-AssistedRadiation ProtectionRadiotherapy, Image-GuidedRadiation MonitoringTreatment OutcomeRadiation PneumonitisBrachytherapyNeoplasms, Radiation-InducedRadiometryRadiosurgeryRadiation-Sensitizing AgentsHead and Neck NeoplasmsNeoplasm Recurrence, LocalNeoplasm StagingChemoradiotherapyRadiation Injuries, ExperimentalBrain NeoplasmsAntineoplastic Combined Chemotherapy ProtocolsCarcinoma, Squamous CellGamma RaysGene DosageRetrospective StudiesParticle AcceleratorsDisease-Free SurvivalRadiation-Protective AgentsDosage Compensation, GeneticNasopharyngeal NeoplasmsOrgans at RiskSurvival RateCosmic RadiationRadiodermatitisFollow-Up StudiesSurvival AnalysisCranial IrradiationCobalt RadioisotopesCisplatinChemotherapy, AdjuvantRectal NeoplasmsTime FactorsPrognosisTomography, X-Ray ComputedBreast NeoplasmsBackground RadiationNeoplasmsDosage FormsLung NeoplasmsPelvic NeoplasmsMastectomy, SegmentalRadiobiologyAntineoplastic AgentsHodgkin DiseaseRadiation EffectsLaryngeal NeoplasmsNeoplasms, Second PrimaryUltraviolet RaysDacarbazineProstatic NeoplasmsFluorouracilVincristineXerostomiaHeavy Ion RadiotherapyAdenocarcinomaRadioisotope TeletherapyProcarbazineOrgan Sparing TreatmentsX-RaysNeoadjuvant TherapyGlioblastomaLymphatic IrradiationHeavy IonsCarcinoma, Non-Small-Cell LungDrug Administration ScheduleSpinal NeoplasmsIridium RadioisotopesPalliative CareGliomaUterine Cervical NeoplasmsRelative Biological EffectivenessCarcinomaLinear Energy TransferProspective StudiesMechlorethamineAcute Radiation SyndromeDNA Damage