Tomography, X-Ray ComputedImage Processing, Computer-AssistedCone-Beam Computed TomographyTomography, Optical CoherenceImaging, Three-DimensionalMultidetector Computed TomographyPositron-Emission TomographyRadiographic Image Interpretation, Computer-AssistedTomography, Spiral ComputedTomographyTomography, Emission-ComputedAlgorithmsImage Interpretation, Computer-AssistedTomography, Emission-Computed, Single-PhotonRadiographic Image EnhancementReproducibility of ResultsFiducial MarkersMandiblePhantoms, ImagingFluorodeoxyglucose F18Subtraction TechniqueSensitivity and SpecificitySkull BaseTomography, OpticalArtifactsFinite Element AnalysisModels, AnatomicImage EnhancementRadiotherapy Planning, Computer-AssistedPattern Recognition, AutomatedElectron Microscope TomographyCephalometryObserver VariationComputer SimulationRetrospective StudiesPredictive Value of TestsMagnetic Resonance ImagingTomography, X-RayRetinaSoftwareTime FactorsLung NeoplasmsTreatment OutcomeLungTomography Scanners, X-Ray ComputedRadiopharmaceuticalsDiagnostic ImagingContrast MediaBrainX-Ray MicrotomographyFluorine RadioisotopesFour-Dimensional Computed TomographyEquipment DesignAnatomy, Cross-SectionalMultimodal ImagingRadiography, ThoracicRadiography, AbdominalProspective StudiesOrganotechnetium CompoundsCalcinosisFeasibility StudiesOxygen RadioisotopesCoronary AngiographyMacula LuteaEquipment Failure AnalysisCarbon RadioisotopesUltrasonographyData CompressionOptic DiskX-Ray Intensifying ScreensCoronary Artery DiseaseFollow-Up StudiesNerve FibersOphthalmoscopyTechnetiumBronchographyRadionuclide ImagingDiagnostic Techniques, OphthalmologicalOptics and PhotonicsROC CurveSolitary Pulmonary NoduleTechnetium Tc 99m SestamibiCardiac-Gated Imaging TechniquesFluorescein AngiographyAutomationSignal Processing, Computer-AssistedMagnetic Resonance AngiographyMolecular ImagingTeleradiologyMyocardial Perfusion ImagingHeartVisual AcuityCerebrovascular CirculationFundus OculiRadioisotopesBrain DiseasesRadiation DosageIodine RadioisotopesReference ValuesSeverity of Illness Index