Proton TherapyProtonsRadiotherapy Planning, Computer-AssistedRadiotherapy DosageRadiotherapy, Intensity-ModulatedRadiometryOrgans at RiskRadiation DosageRadiation InjuriesCraniospinal IrradiationNeutronsChordomaRadiotherapy, ConformalMonte Carlo MethodPhotonsDose-Response Relationship, RadiationProton PumpsRadiation, IonizingRadiotherapy, High-EnergyRelative Biological EffectivenessRadiation OncologyUncertaintyFour-Dimensional Computed TomographyScattering, RadiationRadiotherapyPhantoms, ImagingFibromatosis, AbdominalRadiation ToleranceRadiationRadiotherapy, Computer-AssistedRadiation ProtectionNeoplasms, Radiation-InducedRadiation MonitoringProton Pump InhibitorsTomography, X-Ray ComputedTumor BurdenProstatic NeoplasmsAlgorithmsCosmic RadiationRadiation Injuries, ExperimentalMagnetic Resonance SpectroscopyRadiation PneumonitisMovementNeoplasmsGamma RaysNeoplasms, Second PrimarySpineHydrogen-Ion ConcentrationReproducibility of ResultsBackground RadiationPositron-Emission TomographyEquipment DesignBrain NeoplasmsComputer Simulation