Coronary StenosisCarotid StenosisCoronary AngiographyConstriction, PathologicAortic Valve StenosisMultidetector Computed TomographySpinal StenosisCoronary Artery DiseaseTracheal StenosisSensitivity and SpecificityAngiographyTomography, X-Ray ComputedFractional Flow Reserve, MyocardialPredictive Value of TestsCoronary VesselsBlood Flow VelocityPyloric StenosisUltrasonography, Doppler, DuplexMitral Valve StenosisPulmonary Valve StenosisArterial Occlusive DiseasesRenal Artery ObstructionGraft Occlusion, VascularCarotid Artery, InternalCoronary DiseaseTomography, Spiral ComputedAngioplasty, BalloonSeverity of Illness IndexCoronary CirculationProspective StudiesMagnetic Resonance AngiographyCalcinosisVascular PatencyAngiography, Digital SubtractionStentsChest PainMyocardial Perfusion ImagingCoronary VasospasmAngina PectorisFollow-Up StudiesTreatment OutcomeCarotid Artery DiseasesHemodynamicsContrast MediaObserver VariationEchocardiographyCoronary Artery BypassRetrospective StudiesUltrasonography, InterventionalRisk FactorsElectrocardiographyMyocardial InfarctionReproducibility of ResultsAortic Stenosis, SubvalvularTime FactorsAortic Stenosis, SupravalvularAngioplasty, Balloon, CoronaryTomography, Emission-Computed, Single-PhotonImage Processing, Computer-AssistedChi-Square DistributionEndarterectomy, CarotidRisk AssessmentExercise TestLaryngostenosisAortic ValveTricuspid Valve StenosisDiscrete Subaortic StenosisHeart RatePyloric Stenosis, HypertrophicPrognosisHeart Valve Prosthesis ImplantationCatheterizationEsophageal StenosisIntracranial ArteriosclerosisAngioplastyCardiac CatheterizationVertebrobasilar InsufficiencyCerebral AngiographyCarotid ArteriesRecurrenceHeart Valve ProsthesisPostoperative ComplicationsHypertension, RenovascularUltrasonography, Doppler, ColorIschemic Attack, TransientArteriovenous Shunt, SurgicalRenal ArteryCerebrovascular DisordersIntracranial Arterial DiseasesEndarterectomyEchocardiography, DopplerRheumatic Heart DiseaseStrokeLumbar VertebraePulmonary Veno-Occlusive DiseaseCarotid Artery, ExternalDecompression, SurgicalUltrasonography, Doppler, TranscranialIliac ArteryUltrasonography, Doppler