Tomography, X-Ray ComputedTomography, Emission-Computed, Single-PhotonTomographyPositron-Emission TomographyOrganotechnetium CompoundsTomography, Emission-ComputedTomography, Optical CoherenceTechnetium Tc 99m ExametazimeOximesRadiopharmaceuticalsTomography, Spiral ComputedTechnetium Tc 99m SestamibiTomography, OpticalMultidetector Computed TomographyThallium RadioisotopesCone-Beam Computed TomographyElectron Microscope TomographyImage Processing, Computer-AssistedSensitivity and SpecificityPhantoms, ImagingIodine RadioisotopesFluorodeoxyglucose F18IofetamineTomography, X-RayGated Blood-Pool ImagingReproducibility of ResultsTechnetiumTomography Scanners, X-Ray ComputedBrainImaging, Three-DimensionalTropanesCerebrovascular CirculationGamma CamerasCardiac-Gated Single-Photon Emission Computer-Assisted TomographyMyocardial Perfusion ImagingMagnetic Resonance ImagingMultimodal ImagingFluorine RadioisotopesIodobenzenesImage EnhancementThalliumHeartArtifactsSubtraction TechniqueOrganophosphorus CompoundsAmphetaminesPredictive Value of TestsTechnetium Tc 99m MedronateAlgorithmsX-Ray MicrotomographyContrast MediaSodium Pertechnetate Tc 99mNortropanesDiagnostic ImagingCoronary AngiographyTechnetium Tc 99m Aggregated AlbuminRetrospective StudiesXenon RadioisotopesRadiographic Image Interpretation, Computer-AssistedExercise TestCoronary Artery DiseaseGallium RadioisotopesFlumazenilImage Interpretation, Computer-AssistedProspective StudiesModels, StructuralAcetazolamideDipyridamoleFeasibility StudiesTime FactorsCoronary CirculationDopamine Plasma Membrane Transport ProteinsTreatment OutcomePerfusion ImagingEquipment DesignRadiation DosageIndium RadioisotopesTechnology, RadiologicOxygen RadioisotopesROC CurveRadioactive TracersFour-Dimensional Computed TomographyCoronary DiseaseFollow-Up StudiesRadioisotopesTissue DistributionCalcinosisRadiographic Image EnhancementCarbon Radioisotopes3-IodobenzylguanidineCinanserinRadiography, AbdominalRadiography, ThoracicScattering, RadiationWhole Body ImagingTechnetium Tc 99m Dimercaptosuccinic AcidRadionuclide ImagingMacula LuteaMyocardial IschemiaVentricular Dysfunction, Left