Tomography, X-Ray ComputedTomographyPositron-Emission TomographyTomography, Optical CoherenceTomography, Emission-ComputedTomography, Spiral ComputedTomography, OpticalMultidetector Computed TomographyTomography, Emission-Computed, Single-PhotonCone-Beam Computed TomographyElectron Microscope TomographyTomography, X-RayFluorodeoxyglucose F18Drug Inverse AgonismTomography Scanners, X-Ray ComputedImaging, Three-DimensionalSensitivity and SpecificityImage Processing, Computer-AssistedReproducibility of ResultsMagnetic Resonance ImagingX-Ray MicrotomographyPhantoms, ImagingMultimodal ImagingFluorine RadioisotopesRadiographic Image Interpretation, Computer-AssistedPredictive Value of TestsProspective StudiesBrainRetrospective StudiesDiagnostic ImagingAlgorithmsFour-Dimensional Computed TomographyContrast MediaTreatment OutcomeTime FactorsCalcinosisRadiography, AbdominalRadiographic Image EnhancementRadiography, ThoracicFollow-Up StudiesCoronary AngiographyMacula LuteaCarbon RadioisotopesImage EnhancementOxygen RadioisotopesRisk FactorsDiagnostic Techniques, OphthalmologicalCoronary Artery DiseaseObserver VariationCerebrovascular CirculationEquipment DesignRadiation DosageOptical PhenomenaBronchographyAnatomy, Cross-SectionalArtifactsNerve FibersLung NeoplasmsOptic DiskPrognosisSeverity of Illness IndexIncidental FindingsCase-Control StudiesAngiographyFeasibility StudiesOrganotechnetium CompoundsVisual AcuitySolitary Pulmonary NoduleThallium RadioisotopesReference ValuesComputer SimulationUltrasonographyCoronary VesselsFluorescein AngiographyAortographyCohort StudiesOptic Nerve DiseasesCryoelectron MicroscopyNeoplasm StagingCoronary StenosisInterferometryMyocardial Perfusion ImagingLinear ModelsEquipment Failure AnalysisLungRacloprideROC CurveRetinaMacular EdemaSubtraction TechniqueRetinal Ganglion CellsPreoperative CareOptical ProcessesModels, AnatomicTechnetium Tc 99m SestamibiHeartModels, BiologicalFinite Element AnalysisRisk AssessmentCross-Sectional Studies