Collateral CirculationCoronary CirculationCoronary VesselsCoronary AngiographyCoronary Artery DiseaseCoronary OcclusionCoronary StenosisAngioplasty, Balloon, CoronaryCoronary DiseaseDogsMyocardial IschemiaBalloon OcclusionCollateral LigamentsCoronary Artery BypassMyocardial InfarctionBlood Flow VelocityMicrospheresCardiac CatheterizationHemodynamicsMedial Collateral Ligament, KneeAngiostatinsNeovascularization, PhysiologicAngina PectorisHyperemiaDipyridamoleCoronary VasospasmNitroglycerinElectrocardiographyConstriction, PathologicVasodilator AgentsVascular ResistanceCoronary AneurysmDisease Models, AnimalCoronary ThrombosisTime FactorsAdenosineHeartBlood PressureProspective StudiesCoronary RestenosisRisk FactorsVasodilationMyocardiumPerfusionSwineEndothelium, VascularPercutaneous Coronary InterventionMethyl EthersVasoconstrictionAnesthetics, InhalationTreatment OutcomeMuscle, Smooth, VascularCoronary Care UnitsVascular Endothelial Growth Factor ANG-Nitroarginine Methyl EsterStentsFollow-Up StudiesNitric OxideUltrasonography, InterventionalChronic DiseasePredictive Value of TestsHeart RateLigationNitric Oxide SynthaseMyocardial RevascularizationTomography, X-Ray ComputedCoronary Artery Bypass, Off-PumpCalcinosisAngina, UnstableAngiographyCircle of WillisRegional Blood FlowHindlimbArterial Occlusive DiseasesIschemiaFemoral ArteryRisk AssessmentPlatelet Aggregation InhibitorsRetrospective StudiesSeverity of Illness IndexMagnetic Resonance AngiographyArteriesChest PainCineangiographyEchocardiographyMicrocirculationMyocardial ReperfusionBiological MarkersExercise TestFractional Flow Reserve, MyocardialSensitivity and SpecificityPrognosisRecurrenceVentricular Function, Left