Renal Artery ObstructionRenal ArteryArterial Occlusive DiseasesCineangiographyRetinal Artery OcclusionPulmonary ArteryAngioplasty, BalloonKidneyCollateral CirculationIntestinal ObstructionAirway ObstructionArteriesCoronary AngiographyHypertension, RenovascularUreteral ObstructionKidney DiseasesKidney TransplantationCarotid ArteriesAngiographyFemoral ArteryIliac ArteryMesenteric ArteriesDuodenal ObstructionStentsCerebral ArteriesRenal VeinsUrinary Bladder Neck ObstructionUrethral ObstructionHypertension, RenalBasilar ArteryRenal CirculationKidney TubulesNasal ObstructionGastric Outlet ObstructionTreatment OutcomeAneurysmAorta, AbdominalAcute Kidney InjuryVentricular Outflow ObstructionKidney CortexCeliac ArteryTomography, X-Ray ComputedCoronary Artery BypassRadioisotope RenographyVertebral ArteryNephrectomyBlood PressureMesenteric Artery, SuperiorTime FactorsRadial ArteryKidney Function TestsAngioplastyMammary ArteriesSplenic ArteryRetrospective StudiesCarotid Artery, InternalSubclavian ArteryKidney Failure, ChronicHepatic ArteryGlomerular Filtration RateMagnetic Resonance AngiographyDogsLacrimal Duct ObstructionHydronephrosisCarotid Artery DiseasesFollow-Up StudiesKidney GlomerulusCreatinineAortographyBlood Vessel Prosthesis ImplantationBrachial ArteryCoronary VesselsAngiography, Digital SubtractionPostoperative ComplicationsUltrasonography, Doppler, DuplexAortic Aneurysm, AbdominalIodohippuric AcidVasoconstrictionConstriction, PathologicVascular Surgical ProceduresCarotid Artery, CommonReninKidney MedullaVascular PatencyKidney NeoplasmsVasodilationArteriosclerosisProspective StudiesTechnetium Tc 99m PentetateBlood Vessel ProsthesisHypertensionTechnetium Tc 99m MertiatideMuscle, Smooth, VascularOphthalmic ArteryKidney Tubules, ProximalRats, Sprague-DawleyHemodynamicsUmbilical ArteriesCaptoprilMiddle Cerebral Artery