Portal supply of segment IV of the liver based on CT-scan.
Roxane MaurerMichel RivoireValéria BassoPierre MeeusPatrice PeyratAurélien DupréPublished in: Surgical and radiologic anatomy : SRA (2016)
Portal vascularization of S4 varies widely (2-8 branches) between patients and originates predominantly from the junction between the left portal vein and the round ligament. There is no anatomical rationale to divide S4 into S4a and S4b.