Proton TherapyProtonsRadiotherapy Planning, Computer-AssistedRadiotherapy DosageRadiotherapy, Intensity-ModulatedOrgans at RiskRadiometryCraniospinal IrradiationAdjuvants, ImmunologicNeutronsChordomaMonte Carlo MethodChemotherapy, AdjuvantProton PumpsPhotonsRadiotherapy, ConformalRadiotherapy, High-EnergyRelative Biological EffectivenessRadiation InjuriesUncertaintyFour-Dimensional Computed TomographyScattering, RadiationRadiation DosagePhantoms, ImagingRadiation OncologyFreund's AdjuvantFibromatosis, AbdominalRadiotherapyRadiotherapy, Computer-AssistedProton Pump InhibitorsRadiotherapy, AdjuvantDose-Response Relationship, RadiationTumor BurdenTomography, X-Ray ComputedProstatic NeoplasmsAlgorithmsAdjuvants, PharmaceuticMagnetic Resonance SpectroscopyNeoplasms, Radiation-InducedHydrogen-Ion ConcentrationReproducibility of ResultsMovementTreatment OutcomeNeoplasm StagingSpineNeoplasms, Second PrimaryComputer SimulationLung Neoplasms