Portal VeinVeinsHypertension, PortalPortal SystemSaphenous VeinVaricose VeinsMesenteric VeinsInjectionsFemoral VeinHepatic VeinsJugular VeinsPulmonary VeinsPortal PressureLiver CirculationSplenic VeinRenal VeinsIliac VeinHepatic ArteryVenous ThrombosisUmbilical VeinsPortographyPopliteal VeinPortasystemic Shunt, SurgicalLiverSubclavian VeinCerebral VeinsInjections, IntravenousEsophageal and Gastric VaricesHepatectomyAzygos VeinVena Cava, InferiorLiver NeoplasmsRetinal VeinLiver CirrhosisPortacaval Shunt, SurgicalBrachiocephalic VeinsLiver TransplantationLigationRetinal Vein OcclusionAxillary VeinSplenorenal Shunt, SurgicalInjections, IntramuscularSplanchnic CirculationPhlebographyTime FactorsCarcinoma, HepatocellularVenous PressureTomography, X-Ray ComputedTreatment OutcomeMuscle, Smooth, VascularInjections, SubcutaneousBudd-Chiari SyndromeDogsInjections, IntralesionalThrombosisAnastomosis, SurgicalSplenic ArteryInjections, Intra-ArticularRabbitsUltrasonography, Doppler, ColorEmbolization, TherapeuticGastrointestinal HemorrhageRats, Sprague-DawleySplenectomyVenae CavaeRegional Blood FlowNorepinephrineInjections, Intra-ArterialPortasystemic Shunt, Transjugular IntrahepaticRats, WistarInjections, IntraperitonealConstriction, PathologicLiver DiseasesUltrasonography, DopplerSclerotherapyVenous InsufficiencyAngiographyLiving DonorsUltrasonography, Doppler, DuplexPostoperative ComplicationsVascular Surgical ProceduresRetrospective StudiesHypersplenismDisease Models, AnimalBlood Flow VelocityThrombophlebitisChemoembolization, TherapeuticVascular PatencyLiver Diseases, ParasiticInjections, IntradermalRats, Inbred StrainsGraft Occlusion, VascularInjections, IntraventricularDose-Response Relationship, DrugInjections, EpiduralMuscle ContractionTissue and Organ HarvestingBile DuctsLiver RegenerationSclerosing Solutions