Tomography, Emission-Computed, Single-PhotonPhotonsOrganotechnetium CompoundsTomography, X-Ray ComputedTomography, Emission-ComputedTechnetium Tc 99m ExametazimeOximesThallium RadioisotopesRadiopharmaceuticalsPositron-Emission TomographyIofetamineTechnetiumComputersIodine RadioisotopesCerebrovascular CirculationIodobenzenesTechnetium Tc 99m SestamibiThalliumXenon RadioisotopesTechnetium Tc 99m PyrophosphateHeartBrainImage Processing, Computer-AssistedTropanesMagnetic Resonance ImagingTomographyPhantoms, ImagingAmphetaminesReconstructive Surgical ProceduresSensitivity and SpecificityCardiac-Gated Single-Photon Emission Computer-Assisted TomographyComputer SimulationImaging, Three-DimensionalDiagnostic ImagingMyocardial Perfusion ImagingAcetazolamideOrganophosphorus CompoundsExercise TestOrganometallic CompoundsMultimodal ImagingCinanserinFluorodeoxyglucose F18Reproducibility of ResultsAlgorithmsMyocytes, CardiacTime FactorsPredictive Value of TestsImage EnhancementDopamine Plasma Membrane Transport ProteinsIndium RadioisotopesFrontal LobeTomography, Optical CoherenceThalamic DiseasesCerebral RevascularizationRadioactive TracersRegional Blood FlowRadioisotopesTechnetium Tc 99m MedronateImage Interpretation, Computer-AssistedTreatment OutcomeMyocardial IschemiaAnterior Cruciate Ligament ReconstructionTomography, OpticalNortropanesSpondylolysisGamma CamerasTissue SurvivalElectrocardiographyCoronary AngiographyMyocardial InfarctionDipyridamoleFollow-Up StudiesSpectrometry, GammaTechnetium Tc 99m Aggregated AlbuminMolecular ImagingModels, StructuralDominance, CerebralCoronary DiseaseRadionuclide ImagingTomography, Spiral ComputedCoronary CirculationRetrospective StudiesMyocardiumFlumazenilTissue DistributionEchocardiographyTemporal LobeCardiac OutputSurgical FlapsMoyamoya DiseaseProspective StudiesNitrogen RadioisotopesVentricular Dysfunction, LeftContrast MediaSkull NeoplasmsCone-Beam Computed TomographyNuclear MedicineVentricular Function, LeftPyrrolidines3-Iodobenzylguanidine