Tomography, X-Ray ComputedTomographyImage Processing, Computer-AssistedPositron-Emission TomographyTomography, Optical CoherenceTomography, Emission-ComputedTomography, Spiral ComputedTomography, OpticalCone-Beam Computed TomographyMultidetector Computed TomographyImaging, Three-DimensionalImage Interpretation, Computer-AssistedRadiographic Image EnhancementTomography, Emission-Computed, Single-PhotonElectron Microscope TomographyRadiographic Image Interpretation, Computer-AssistedTomography, X-RayReproducibility of ResultsFluorodeoxyglucose F18Sensitivity and SpecificityAlgorithmsTomography Scanners, X-Ray ComputedDiagnostic ImagingSubtraction TechniqueContrast MediaBrainObserver VariationX-Ray MicrotomographyFluorine RadioisotopesFour-Dimensional Computed TomographyPattern Recognition, AutomatedPredictive Value of TestsEquipment DesignMagnetic Resonance ImagingAnatomy, Cross-SectionalRetrospective StudiesMultimodal ImagingRadiography, ThoracicRadiography, AbdominalPhantoms, ImagingTime FactorsProspective StudiesOrganotechnetium CompoundsCalcinosisFeasibility StudiesTreatment OutcomeOxygen RadioisotopesCoronary AngiographyMacula LuteaEquipment Failure AnalysisCarbon RadioisotopesUltrasonographyModels, AnatomicData CompressionSoftwareOptic DiskComputer SimulationX-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 AngiographyRetinaMolecular ImagingTeleradiologyImage EnhancementMyocardial Perfusion ImagingHeartVisual AcuityCerebrovascular CirculationLung NeoplasmsFundus OculiRadioisotopesBrain DiseasesRadiation DosageIodine RadioisotopesReference ValuesSeverity of Illness IndexGadolinium DTPABrain MappingThalliumOptical ProcessesIohexolRadiotherapy Planning, Computer-AssistedInterferometryCoronary StenosisPreoperative Care