RadiotherapyRadiotherapy DosageRadiotherapy, ConformalRadiotherapy, AdjuvantRadiotherapy, Intensity-ModulatedRadiotherapy Planning, Computer-AssistedRadiotherapy, High-EnergyCombined Modality TherapyDose FractionationRadiation InjuriesRadiotherapy, Computer-AssistedRadiotherapy, Image-GuidedRadiation OncologyTreatment OutcomeRadiosurgeryHead and Neck NeoplasmsDose-Response Relationship, RadiationBrachytherapyNeoplasm Recurrence, LocalNeoplasm StagingChemoradiotherapyAntineoplastic Combined Chemotherapy ProtocolsNasopharyngeal NeoplasmsDisease-Free SurvivalBrain NeoplasmsCarcinoma, Squamous CellRadiation ToleranceOrgans at RiskSurvival RateRetrospective StudiesRadiation-Sensitizing AgentsSurvival AnalysisLung NeoplasmsRectal NeoplasmsFollow-Up StudiesChemotherapy, AdjuvantParticle AcceleratorsCisplatinCranial IrradiationPrognosisRadiometryProstatic NeoplasmsRadiation PneumonitisRadiation DosagePelvic NeoplasmsLaryngeal NeoplasmsMastectomy, SegmentalBreast NeoplasmsHodgkin DiseaseRadiodermatitisHeavy Ion RadiotherapyNeoplasms, Radiation-InducedVincristineNeoplasms, Second PrimaryTomography, X-Ray ComputedDacarbazineOrgan Sparing TreatmentsXerostomiaProcarbazineFluorouracilNeoadjuvant TherapyNeoplasmsRadioisotope TeletherapyAntineoplastic AgentsTime FactorsSpinal NeoplasmsPalliative CareAdenocarcinomaCobalt RadioisotopesCarcinoma, Non-Small-Cell LungLymphatic IrradiationMechlorethamineUterine Cervical NeoplasmsCarcinomaGlioblastomaRadiation-Protective AgentsSalvage TherapyBleomycinKaplan-Meier EstimateMastectomyIridium RadioisotopesOsteoradionecrosisAntineoplastic Agents, AlkylatingPelvisEsophageal NeoplasmsGliomaLymphatic MetastasisThoracic NeoplasmsTumor BurdenDoxorubicinPatient PositioningProspective StudiesRadiotherapy Setup ErrorsFiducial MarkersVinblastineSarcomaLaryngectomyCyclophosphamideAndrogen AntagonistsFeasibility Studies