RadiosurgeryDose FractionationDose-Response Relationship, RadiationRadiotherapy Planning, Computer-AssistedRadiation Equipment and SuppliesFour-Dimensional Computed TomographyRadiation DosageUltraviolet RaysRadiotherapy, ConformalRadiotherapy DosageLung NeoplasmsRadiometryRadiotherapy, Intensity-ModulatedSpinal NeoplasmsLiver NeoplasmsRadiobiologyTreatment OutcomeRadiation InjuriesCarcinoma, Non-Small-Cell LungTumor BurdenNeoplasmsOrgans at RiskRadiation, IonizingRetrospective StudiesTomography, X-Ray ComputedClinical Trials as TopicCarcinoma, HepatocellularRadiation ToleranceCarcinogensRadiationRadiotherapyRadiation ProtectionCombined Modality TherapyRadiation PneumonitisRadiation MonitoringRadiotherapy Setup ErrorsRadiotherapy, Image-GuidedRadiation OncologyRadiation Injuries, ExperimentalAneuploidyFollow-Up StudiesCell Transformation, NeoplasticBrachytherapyWhole-Body IrradiationSpiral Cone-Beam Computed TomographyNeoplasm Recurrence, LocalFiducial MarkersNeoplasms, Radiation-InducedRadiotherapy, AdjuvantCone-Beam Computed TomographyRisk AssessmentCosmic RadiationNeoplasm StagingGamma RaysOrgan Sparing TreatmentsProstatic NeoplasmsPatient PositioningRadiation-Sensitizing AgentsRisk FactorsSurvival RateDisease-Free SurvivalBackground RadiationRadiation-Protective AgentsRadiotherapy, Computer-Assisted