Radiation OncologyHealth PhysicsMedical OncologyRadiation InjuriesRadiotherapyCancer Care FacilitiesRadiobiologyRadiotherapy, Computer-AssistedRadiotherapy DosageBrachytherapyNeoplasmsRadiation DosageSocieties, MedicalResearchRadiation, IonizingRadiotherapy Planning, Computer-AssistedDose-Response Relationship, RadiationRadiotherapy, ConformalOncology NursingRadiation ToleranceRadiotherapy, Image-GuidedRadiotherapy, High-EnergyDose FractionationRadiology Department, HospitalCombined Modality TherapyRadiotherapy, Intensity-ModulatedHospitals, UniversityRadiationQuality Assurance, Health CareRadiation ProtectionRadiation MonitoringRadiosurgeryRadiotherapy, AdjuvantOncology Service, HospitalTreatment OutcomeChemoradiotherapyAccreditationHealth PlanningUnited StatesResearch Support as TopicForecastingRetrospective StudiesResearch DesignPositron-Emission TomographyNeoplasm StagingQuestionnairesHead and Neck NeoplasmsResearch PersonnelEthics, ResearchBrain NeoplasmsTomography, X-Ray ComputedPrognosisBreast NeoplasmsNursing ResearchFollow-Up StudiesNeoplasm Recurrence, LocalJapanPhysician's Practice PatternsCosmic RadiationSurvival RateRadiation Injuries, ExperimentalPractice Guidelines as TopicProstatic NeoplasmsRadiation PneumonitisNeoplasms, Radiation-InducedPilot ProjectsTranslational Medical ResearchGamma Rays