Portal VeinPortal SystemCarbadoxLiver CirculationHypertension, PortalLiverVeinsHepatic VeinsMesenteric VeinsPortal PressureHepatic ArteryEmbolism, AirGlucosePortasystemic Shunt, SurgicalSaphenous VeinSplenorenal Shunt, SurgicalVaricose VeinsSplenic VeinFemoral VeinPortographyVenous ThrombosisJugular VeinsPulmonary VeinsSplanchnic CirculationHepatectomyTachyphylaxisLiver NeoplasmsRenal VeinsDogsLiver CirrhosisIliac VeinGasesEsophageal and Gastric VaricesLiver TransplantationPortacaval Shunt, SurgicalUmbilical VeinsRegional Blood FlowVena Cava, InferiorCarcinoma, HepatocellularHepatic EncephalopathyLigationLiver DiseasesFatty Acids, VolatileTime FactorsPopliteal VeinIntestinal AbsorptionRats, Sprague-DawleyInfusions, IntravenousBudd-Chiari SyndromeTomography, X-Ray ComputedBlood GlucoseVenous PressureInsulinSplenic ArterySubclavian VeinGastrointestinal HemorrhageMuscle, Smooth, Vascular