Radiotherapy Setup ErrorsRadiotherapyRadiotherapy DosageRadiotherapy Planning, Computer-AssistedRadiotherapy, Image-GuidedRadiotherapy, ConformalRadiotherapy, Intensity-ModulatedRadiotherapy, AdjuvantRadiotherapy, Computer-AssistedPatient PositioningFiducial MarkersDose FractionationRadiotherapy, High-EnergyReproducibility of ResultsCombined Modality TherapyCone-Beam Computed TomographyRadiometryAlgorithmsAnatomic LandmarksSpiral Cone-Beam Computed TomographyRadiosurgeryImmobilizationRadiation InjuriesTongaX-Ray Intensifying ScreensEquipment DesignRadiation Oncology