Radiotherapy DosageRadiotherapyRadiotherapy Planning, Computer-AssistedRadiotherapy, ConformalRadiotherapy, Intensity-ModulatedRadiotherapy, Computer-AssistedRadiotherapy, AdjuvantRadiation OncologyRadiation InjuriesRadiotherapy, Image-GuidedFiducial MarkersCombined Modality TherapyRadiometryParticle AcceleratorsDose-Response Relationship, RadiationRadiotherapy, High-EnergyHead and Neck NeoplasmsDose FractionationTomography, X-Ray ComputedTreatment OutcomeBrain NeoplasmsNeoplasmsRetrospective StudiesPositron-Emission TomographyRadiosurgeryBrachytherapyNeoplasm Recurrence, LocalNeoplasm StagingChemoradiotherapyAlgorithmsAntineoplastic Combined Chemotherapy ProtocolsNasopharyngeal NeoplasmsDisease-Free SurvivalCarcinoma, Squamous CellRadiation ToleranceReproducibility of ResultsSurvival RateOrgans at RiskRadiation-Sensitizing AgentsSurvival AnalysisLung NeoplasmsFollow-Up StudiesRectal NeoplasmsChemotherapy, AdjuvantCisplatinPrognosisCranial IrradiationRadiation DosageProstatic NeoplasmsRadiation PneumonitisPelvic NeoplasmsBreast NeoplasmsLaryngeal NeoplasmsMastectomy, SegmentalHodgkin DiseaseRadiodermatitisNeoplasms, Radiation-InducedHeavy Ion RadiotherapyVincristineDacarbazineNeoplasms, Second PrimaryOrgan Sparing TreatmentsTime FactorsProcarbazineXerostomiaFluorouracilAntineoplastic AgentsGene DosageNeoadjuvant TherapyRadioisotope TeletherapyDosage Compensation, GeneticSpinal NeoplasmsPalliative CareAdenocarcinomaCobalt RadioisotopesCarcinoma, Non-Small-Cell LungLymphatic IrradiationMechlorethamineUterine Cervical NeoplasmsCarcinomaGlioblastomaRadiation-Protective AgentsDrug Administration ScheduleSalvage TherapyKaplan-Meier EstimateBleomycinMastectomyIridium RadioisotopesAntineoplastic Agents, AlkylatingProspective StudiesGliomaOsteoradionecrosisEsophageal NeoplasmsPelvisDoxorubicinLymphatic MetastasisDosage FormsThoracic NeoplasmsTumor BurdenPatient Positioning