Portal VeinHypertension, PortalPortal SystemVeinsMesenteric VeinsPortal PressureLiver CirculationSaphenous VeinHepatic VeinsVaricose VeinsHepatic ArterySplenic VeinFemoral VeinVenous ThrombosisPortographyJugular VeinsPulmonary VeinsPortasystemic Shunt, SurgicalLiverRenal VeinsIliac VeinEsophageal and Gastric VaricesHepatectomyUmbilical VeinsPortacaval Shunt, SurgicalLiver CirrhosisLiver NeoplasmsLiver TransplantationSplenorenal Shunt, SurgicalVena Cava, InferiorLigationSplanchnic CirculationPopliteal VeinCarcinoma, HepatocellularBudd-Chiari SyndromeSubclavian VeinVenous PressureMuscle, Smooth, VascularSplenic ArteryTomography, X-Ray ComputedGastrointestinal HemorrhageCerebral VeinsPortasystemic Shunt, Transjugular IntrahepaticAzygos VeinSplenectomyThrombosisPhlebographyAnastomosis, SurgicalEmbolization, TherapeuticDogsLiver DiseasesRetinal VeinTreatment OutcomeBrachiocephalic VeinsLiving DonorsUltrasonography, Doppler, ColorHypersplenismNorepinephrineUltrasonography, DopplerVenae CavaeAxillary VeinRegional Blood FlowAngiographyLiver Diseases, ParasiticRetinal Vein OcclusionChemoembolization, TherapeuticTime FactorsConstriction, PathologicRabbitsBile DuctsLiver Cirrhosis, ExperimentalHepatic EncephalopathyPostoperative ComplicationsLiver RegenerationLiver Function TestsAscitesLiver Cirrhosis, AlcoholicBlood Flow VelocityRetrospective StudiesSplenomegalySclerotherapyMuscle Contraction