Tomography, X-Ray ComputedTomographyPositron-Emission TomographyTomography, Optical CoherenceTomography, Emission-ComputedTomography, Spiral ComputedTomography, OpticalMultidetector Computed TomographyTomography, Emission-Computed, Single-PhotonCone-Beam Computed TomographyReproducibility of ResultsElectron Microscope TomographyTomography, X-RayImaging, Three-DimensionalSensitivity and SpecificityFluorodeoxyglucose F18Tomography Scanners, X-Ray ComputedImage Processing, Computer-AssistedObserver VariationMagnetic Resonance ImagingTime FactorsPhantoms, ImagingPredictive Value of TestsProspective StudiesAlgorithmsEquipment DesignRadiographic Image Interpretation, Computer-AssistedX-Ray MicrotomographyFluorine RadioisotopesRetrospective StudiesReference ValuesBrainTreatment OutcomeMultimodal ImagingDiagnostic Techniques, OphthalmologicalContrast MediaDiagnostic ImagingRadiographic Image EnhancementFollow-Up StudiesImage EnhancementCerebrovascular CirculationFour-Dimensional Computed TomographyMacula LuteaCalibrationCarbon RadioisotopesArtifactsEquipment Failure AnalysisOxygen RadioisotopesUltrasonographyFeasibility StudiesRadiography, AbdominalAnatomy, Cross-SectionalSeverity of Illness IndexCalcinosisModels, BiologicalRadiography, ThoracicNerve FibersRadiation DosageOptic DiskCoronary AngiographyAnalysis of VarianceROC CurveInterferometryBlood Flow VelocityCoronary Artery DiseaseComputer SimulationBiological MarkersAnthropometryLuminescent MeasurementsLinear ModelsLung Volume MeasurementsOptics and PhotonicsOptical PhenomenaRisk FactorsDimensional Measurement AccuracyPrognosisElectric ImpedanceAbortion, SpontaneousLungVisual AcuityModels, AnatomicBronchographyRegression AnalysisScattering, RadiationLasersRegional Blood FlowBody Weights and MeasuresTransducersCross-Sectional StudiesOptic Nerve DiseasesModels, TheoreticalBiomechanical PhenomenaOxygenAngiographyHeartGlaucomaMandibleBlood PressureOphthalmoscopyRetina