Coronary VasospasmCoronary AngiographyCoronary VesselsVasospasm, IntracranialAngina Pectoris, VariantErgonovineCoronary Artery DiseaseCoronary StenosisCoronary CirculationElectrocardiographyAngioplasty, Balloon, CoronaryCoronary DiseaseIsosorbide DinitrateCoronary Artery BypassSubarachnoid HemorrhageVasodilator AgentsMyocardial InfarctionAngina PectorisCardiac CatheterizationDiltiazemVasoconstrictionCoronary AneurysmPredictive Value of TestsFractional Flow Reserve, MyocardialAcetylcholineCalcium Channel BlockersCoronary ThrombosisChest PainTomography, X-Ray ComputedMyocardial IschemiaSensitivity and SpecificityRisk FactorsExercise TestProspective StudiesCalcinosisrho-Associated KinasesNitratesCoronary RestenosisCoronary OcclusionTime FactorsTreatment OutcomeIschemic Attack, TransientSeverity of Illness IndexDipyridamolePercutaneous Coronary InterventionUltrasonography, InterventionalDobutamineThallium RadioisotopesFollow-Up StudiesBasilar ArteryEchocardiographyMyocardial Perfusion ImagingTomography, Spiral ComputedCoronary Care UnitsMultidetector Computed TomographyCineangiographyAngina, UnstableMyocardial RevascularizationHemodynamicsHeartTomography, Emission-Computed, Single-PhotonDogsEchocardiography, StressRetrospective StudiesTakotsubo CardiomyopathyBlood Flow VelocityCollateral CirculationStentsThalliumRisk AssessmentAdenosineBiological MarkersContrast MediaPapaverineVascular CalcificationMagnetic Resonance AngiographyMyocardiumPrognosisAsymptomatic DiseasesVentricular Function, LeftMethylergonovineCerebral AngiographyTechnetium Tc 99m SestamibiVasodilationChi-Square DistributionCoronary Artery Bypass, Off-Pump