AstrocytomaRadiotherapySpinal CordRadiotherapy DosageRadiotherapy, AdjuvantRadiotherapy, ConformalSpinal Cord InjuriesBrain NeoplasmsRadiotherapy, Intensity-ModulatedCombined Modality TherapyRadiotherapy Planning, Computer-AssistedRadiotherapy, High-EnergySpinal Cord NeoplasmsDose FractionationRadiation InjuriesGlioblastomaRadiotherapy, Computer-AssistedRadiotherapy, Image-GuidedHypothalamic NeoplasmsSpinal NeoplasmsGliomaInjections, SpinalTreatment OutcomeSupratentorial NeoplasmsSpinal NervesOptic Nerve NeoplasmsSpinal Cord CompressionNeoplasm Recurrence, LocalSpinal Cord DiseasesRadiation OncologyAnesthesia, SpinalOligodendrogliomaSpinal Nerve RootsSpinal CanalRadiosurgerySpinal DiseasesDose-Response Relationship, RadiationNeoplasm StagingHead and Neck NeoplasmsBrachytherapyRetrospective StudiesAntineoplastic Combined Chemotherapy ProtocolsChemoradiotherapySurvival RateDacarbazineSpinal StenosisSurvival AnalysisPrognosisMagnetic Resonance ImagingDisease-Free SurvivalSpinal FusionEpendymomaNimustineCentral Nervous System NeoplasmsFollow-Up StudiesTomography, X-Ray ComputedNasopharyngeal NeoplasmsCerebellar NeoplasmsAstrocytesCarcinoma, Squamous CellRadiation ToleranceTime FactorsCranial IrradiationOrgans at RiskBrain Stem NeoplasmsChemotherapy, AdjuvantMeningeal NeoplasmsRadiation-Sensitizing AgentsLung NeoplasmsSpinal InjuriesAntineoplastic Agents, AlkylatingProcarbazineMuscular Atrophy, SpinalRectal NeoplasmsNeoplasms, Radiation-InducedParticle AcceleratorsMeningiomaCisplatinTumor Cells, CulturedVincristineAnaplasiaRadiometrySpinal Cord IschemiaImmunohistochemistryRadiation DosageAntineoplastic AgentsGanglia, SpinalProstatic NeoplasmsGlial Fibrillary Acidic ProteinRadiation PneumonitisNeoplasms, Second PrimaryNeurosurgical ProceduresPelvic NeoplasmsLomustineThoracic VertebraeBreast NeoplasmsSpineLaminectomyLaryngeal NeoplasmsMastectomy, Segmental