Balloon OcclusionCatheterizationAngioplasty, BalloonEmbolization, TherapeuticCarotid Artery, InternalCollateral CirculationAngioplasty, Balloon, CoronaryCavernous SinusSuperior Sagittal SinusTreatment OutcomeCarotid Artery DiseasesIntracranial AneurysmIntra-Aortic Balloon PumpingStentsIntraoperative CareCerebral AngiographyGastric BalloonHemodynamicsOximesCoronary CirculationOrganotechnetium CompoundsTechnetium Tc 99m ExametazimeCoronary OcclusionTime FactorsIntracranial EmbolismMyocardial StunningMyocardial IschemiaSwineCoronary VesselsRetinal Vein OcclusionCoronary AngiographyArterial Occlusive DiseasesArteriovenous FistulaFollow-Up StudiesCerebrovascular CirculationRetinal Artery OcclusionIntraoperative ComplicationsCardiac CatheterizationDisease Models, AnimalTomography, Emission-Computed, Single-PhotonVena Cava, InferiorDogsMyocardial InfarctionElectrocardiographyCoronary DiseaseMyocardial ReperfusionNeurologic ExaminationBlood Flow VelocityBalloon ValvuloplastyProspective StudiesTomography, X-Ray ComputedCarotid StenosisDental OcclusionVentricular Function, LeftBlood PressureContrast MediaPreoperative CareAngioplasty, Balloon, Laser-AssistedConstriction, PathologicGraft Occlusion, VascularInfarction, Middle Cerebral ArteryBrain IschemiaCarotid Artery InjuriesIliac ArteryRecurrencePulmonary Valve StenosisFemoral ArteryAngiographyConstrictionTunica IntimaMitral Valve StenosisMesenteric Vascular OcclusionRetrospective StudiesDental Occlusion, CentricCerebral InfarctionCerebral ArteriesTherapeutic OcclusionDilatationVascular PatencyCarotid Arteries