Balloon OcclusionAngiographyCatheterizationCoronary AngiographyCerebral AngiographyAngioplasty, BalloonMagnetic Resonance AngiographyEmbolization, TherapeuticAngiography, Digital SubtractionCarotid Artery, InternalCollateral CirculationAngioplasty, Balloon, CoronaryIntracranial AneurysmCavernous SinusCarotid Artery DiseasesTomography, X-Ray ComputedSuperior Sagittal SinusStentsTreatment OutcomeFluorescein AngiographyContrast MediaCoronary VesselsIntra-Aortic Balloon PumpingCoronary CirculationArterial Occlusive DiseasesIntraoperative CareArteriovenous FistulaHemodynamicsCoronary OcclusionTime FactorsOrganotechnetium CompoundsGastric BalloonMyocardial IschemiaFollow-Up StudiesOximesCoronary DiseaseIntracranial EmbolismCardiac CatheterizationTechnetium Tc 99m ExametazimeTomography, Emission-Computed, Single-PhotonCerebrovascular CirculationMyocardial StunningMyocardial InfarctionSwineElectrocardiographyRetinal Vein OcclusionRetinal Artery OcclusionCarotid StenosisProspective StudiesBlood Flow VelocityIntraoperative ComplicationsConstriction, PathologicVena Cava, InferiorDogsDisease Models, AnimalMyocardial ReperfusionNeurologic ExaminationCoronary StenosisPreoperative CareRadionuclide AngiographyCoronary Artery DiseaseGraft Occlusion, VascularVentricular Function, LeftBalloon ValvuloplastySensitivity and SpecificityCerebral ArteriesBrain IschemiaRetrospective StudiesIliac ArteryImaging, Three-DimensionalBlood PressureDental OcclusionAngioplasty, Balloon, Laser-AssistedTomography, Spiral ComputedInfarction, Middle Cerebral ArteryFemoral ArteryVertebral ArteryPredictive Value of TestsVertebrobasilar InsufficiencyVascular PatencyCarotid ArteriesRecurrenceUltrasonography, InterventionalAneurysm, RupturedIntracranial Arteriovenous MalformationsCerebral Arterial DiseasesCerebral InfarctionCarotid Artery InjuriesFeasibility StudiesMesenteric Vascular OcclusionPulmonary Valve StenosisIschemic Attack, TransientIopamidolImage Processing, Computer-AssistedSubarachnoid HemorrhageReproducibility of ResultsIohexolTunica IntimaMultidetector Computed TomographyRadiography, Interventional