Coronary AngiographyCoronary StenosisTomography, X-Ray ComputedAngiographyCoronary Artery DiseasePredictive Value of TestsSensitivity and SpecificityCarotid StenosisMagnetic Resonance AngiographyCerebral AngiographyAortic Valve StenosisConstriction, PathologicAngiography, Digital SubtractionSpinal StenosisTracheal StenosisPulmonary Valve StenosisStentsFluorescein AngiographyPyloric StenosisMitral Valve StenosisCarotid Artery, InternalFollow-Up StudiesTreatment OutcomeAngioplasty, BalloonCoronary VesselsGraft Occlusion, VascularCoronary DiseaseUltrasonography, Doppler, DuplexEndarterectomy, CarotidRecurrenceProspective StudiesSpinal CanalContrast MediaAngioplasty, Balloon, CoronaryVascular PatencyRetrospective StudiesBlood Flow VelocityRenal Artery ObstructionSeverity of Illness IndexCatheterizationUltrasonography, InterventionalCoronary CirculationCoronary RestenosisArterial Occlusive DiseasesArteriovenous Shunt, SurgicalIntracranial AneurysmRadionuclide AngiographyTime FactorsTomography, Spiral ComputedRisk FactorsEchocardiographyPostoperative ComplicationsImaging, Three-DimensionalVertebrobasilar InsufficiencyHemodynamicsAortic Stenosis, SubvalvularMyocardial InfarctionBlood Vessel ProsthesisAortic Stenosis, SupravalvularBlood Vessel Prosthesis ImplantationCardiac CatheterizationMagnetic Resonance ImagingAnastomosis, SurgicalMultidetector Computed TomographyCarotid Artery DiseasesReproducibility of ResultsIntracranial ArteriosclerosisObserver VariationEmbolization, TherapeuticAortic ValveIopamidolVertebral ArteryFractional Flow Reserve, MyocardialCarotid ArteriesIntracranial Arteriovenous MalformationsLaryngostenosisImage Processing, Computer-AssistedTricuspid Valve StenosisAngioplastyRadiographic Image Interpretation, Computer-AssistedCalcinosisRenal ArteryCollateral CirculationDiscrete Subaortic StenosisCerebrovascular DisordersUltrasonography, Doppler, ColorAngina PectorisIohexolHeart Valve Prosthesis ImplantationIschemic Attack, TransientFeasibility StudiesCerebral ArteriesPyloric Stenosis, HypertrophicElectrocardiographyRadiographic Image EnhancementEndarterectomyIliac ArteryAneurysm, RupturedSubarachnoid HemorrhageUltrasonography, Doppler, Transcranial