Tomography, X-Ray ComputedTomographyPositron-Emission TomographyTomography, Optical CoherenceTomography, Emission-ComputedTomography, Spiral ComputedCone-Beam Computed TomographyScintillation CountingTomography, OpticalRadiographyMultidetector Computed TomographyGamma RaysTomography, Emission-Computed, Single-PhotonPhantoms, ImagingEquipment DesignElectron Microscope TomographySensitivity and SpecificityRadiation DosageTomography Scanners, X-Ray ComputedReproducibility of ResultsTomography, X-RayEquipment Failure AnalysisX-Ray Intensifying ScreensRadiographic Image EnhancementRadiographic Image Interpretation, Computer-AssistedImaging, Three-DimensionalTelluriumRadiometryElectron Probe MicroanalysisPhotonsFluorodeoxyglucose F18Image Processing, Computer-AssistedPneumoconiosisElasmobranchiiSkates (Fish)Computer-Aided DesignArtifactsAlgorithmsCadmium CompoundsCosmic RadiationMagnetic Resonance ImagingTransducersFast NeutronsTime FactorsSpectrometry, X-Ray EmissionRadiology Department, HospitalGamma CamerasLutetiumChromatography, GasX-Ray MicrotomographyGermaniumX-RaysProspective StudiesWrist JointPredictive Value of TestsDose-Response Relationship, RadiationRetrospective StudiesCalibrationObserver VariationRadiation MonitoringUltraviolet RaysImage EnhancementSemiconductorsDiagnostic ImagingForeign BodiesChromatography, High Pressure LiquidRadiation EffectsMultimodal ImagingFluorine RadioisotopesTeleradiologyMetacarpophalangeal JointAluminum SilicatesSilicatesAnimal FinsMetacarpusDiagnostic ErrorsLungOptics and PhotonicsX ChromosomeCathode Ray TubeCraniocerebral TraumaPleuraRadionuclide ImagingScattering, RadiationContrast MediaEmergency Service, HospitalBrainAsbestosisFlame IonizationPlasticsTechnology, RadiologicCadmium RadioisotopesFollow-Up StudiesInfrared RaysRadiography, ThoracicMonte Carlo MethodRadiation ProtectionDental TechniciansOptical ProcessesCalcinosis