Radiotherapy Planning, Computer-AssistedProton TherapyPhysical Therapy ModalitiesFilm DosimetryRadiotherapy DosageRadiometryRadiotherapy, Intensity-ModulatedRadiotherapy, ConformalRadiation InjuriesRadiation DosageTreatment OutcomeRadiotherapyRadiation, IonizingDose-Response Relationship, RadiationPhantoms, ImagingCombined Modality TherapyRadiation ToleranceRadiation OncologyDose FractionationGenetic TherapyRadiotherapy, AdjuvantRadiationTime FactorsBrachytherapyRadiation ProtectionRadiation PneumonitisRadiosurgeryRadiation MonitoringRadiotherapy, Computer-AssistedCranial IrradiationRadiotherapy, Image-GuidedNeoplasm Recurrence, LocalRadiation-Sensitizing AgentsNeoplasms, Radiation-InducedParticle AcceleratorsBrain NeoplasmsHead and Neck NeoplasmsRadiation Injuries, ExperimentalRadiotherapy, High-EnergyOrgans at Risk