Organs at RiskRadiotherapy Planning, Computer-AssistedRadiotherapy, Intensity-ModulatedRadiotherapy DosageRadiotherapy, Image-GuidedRadiotherapy, ConformalRadiometryRadiation OncologyOrgan Sparing TreatmentsProton TherapyParticle AcceleratorsBrachytherapyRadiation InjuriesDose-Response Relationship, RadiationRadiotherapy, Computer-AssistedTomography, Spiral ComputedRadiation DosageSpinal NeoplasmsImaging, Three-DimensionalTomography, X-Ray ComputedDose FractionationRadiotherapyRadiosurgeryPhantoms, ImagingTumor BurdenFeasibility StudiesAlgorithmsHead and Neck NeoplasmsAnatomy, ArtisticUterine Cervical NeoplasmsProstatic NeoplasmsRelative Biological EffectivenessOrgan SpecificityOrgan TransplantationOrgan SizeTreatment OutcomeTissue and Organ Procurement