Caren van Roekel

23 Radioembolization receptor analog (i.e. DOTATATE/DOTATOC/DOTANOC) PET/CT is the most sensitive imaging modality to detect neuroendocrine tumors and metastases (30, 31). 2.3.2. Vascular anatomy The functional anatomy of the liver is based on the branching pattern of the portal vein. According to the Couinaud model of segmental anatomy, eight liver segments can be distinguished with a distinct vascularization and biliary drainage (Figure 1). FIGURE 1. Segmental hepatic anatomy according to Couinaud. The standard arterial anatomy of the adult liver is described as a common hepatic artery (CHA) originating from a celiac trifurcation that gives off the gastroduodenal artery branch (GDA) and then continues as the proper hepatic artery (PHA). The PHA then splits into the left hepatic artery (LHA), vascularizing segment 2-4, and the right hepatic artery (RHA), vascularizing segment 5-8. However, in asmuch as 21-45%of patients, there are anatomic variants of the hepatic arterial configuration (32-35). The vascularization of the caudate lobe (segment 1 according to Couinaud) is particularly varied, with a range of 1-5 arteries supplying this lobe. Most often, this segment is supplied by two branches, originating from the RHA and LHA. Although resection of caudate lobe tumors is associated with high complication and mortality rates and techniques such as radiofrequency 2