Coronary StenosisCoronary VesselsCoronary AngiographyCoronary CirculationCoronary Artery DiseaseCoronary DiseaseIntestinal ObstructionAirway ObstructionAngioplasty, Balloon, CoronaryFractional Flow Reserve, MyocardialCarotid StenosisAortic Valve StenosisConstriction, PathologicUreteral ObstructionCoronary Artery BypassCoronary VasospasmCzechoslovakiaTracheal StenosisSpinal StenosisMyocardial InfarctionStentsDogsMyocardial IschemiaTomography, X-Ray ComputedUltrasonography, InterventionalHemodynamicsSeverity of Illness IndexBlood Flow VelocityTreatment OutcomePredictive Value of TestsPyloric StenosisFollow-Up StudiesCoronary AneurysmSensitivity and SpecificityCoronary RestenosisHyperemiaPulmonary Valve StenosisMitral Valve StenosisProspective StudiesCardiac CatheterizationUSSRCoronary ThrombosisEchocardiographyDuodenal ObstructionDobutamineRisk FactorsElectrocardiographyCalcinosisDipyridamoleAngina Pectoris, VariantAdenosineTomography, Spiral ComputedThallium RadioisotopesExercise TestTime FactorsCollateral CirculationUrinary Bladder Neck ObstructionUrethral ObstructionPercutaneous Coronary InterventionTomography, Emission-Computed, Single-PhotonNasal ObstructionVentricular Outflow ObstructionRetrospective StudiesAngina PectorisGastric Outlet ObstructionChest PainMyocardial RevascularizationVasodilator AgentsMagnetic Resonance AngiographyMyocardial Perfusion ImagingMyocardial StunningMyocardial ContractionAngina, UnstableEchocardiography, StressBlood PressureCoronary OcclusionContrast MediaHeartMucocutaneous Lymph Node SyndromeAngiographyCineangiographyReproducibility of ResultsSwineObserver VariationNitroglycerinMultidetector Computed TomographyMyocardiumRecurrenceRisk AssessmentEndocardiumAortic Stenosis, SubvalvularPericardiumRenal Artery ObstructionModels, CardiovascularMicrocirculationLacrimal Duct ObstructionAngioplasty, BalloonFeasibility StudiesROC CurveVentricular Function, Left