Femoral VeinVeinsSaphenous VeinPopliteal VeinIliac VeinVaricose VeinsPortal VeinVenous InsufficiencyVenous ValvesPhlebographyJugular VeinsVenous ThrombosisUltrasonography, Doppler, DuplexPulmonary VeinsMesenteric VeinsThighCatheterization, PeripheralLegThrombophlebitisFemoral ArterySubclavian VeinHepatic VeinsVena Cava, InferiorVascular MalformationsVascular PatencyCatheterization, Central VenousRenal VeinsVenous PressureUmbilical VeinsVascular Surgical ProceduresArteriovenous Shunt, SurgicalVascular GraftingVaricose UlcerVena Cava FiltersCatheters, IndwellingVascular NeoplasmsLower ExtremityThrombosisPulmonary EmbolismBlood Flow VelocityDogsPhlebotomySplenic VeinCardiac CatheterizationBlood Vessel ProsthesisCerebral VeinsRegional Blood FlowUltrasonography, Doppler, ColorCatheterizationDissectionBandagesCentral Venous PressureConstriction, PathologicTime FactorsTreatment OutcomePostthrombotic SyndromeRetinal VeinLigationGraft Occlusion, VascularAzygos VeinCadaverBrachiocephalic VeinsPolytetrafluoroethylenePolyethylene TerephthalatesBlood Vessel Prosthesis ImplantationAnastomosis, SurgicalGravity SuitsSaccharumAxillary Vein