Objectives: To determine the imaging modality that provided the greatest detail of the hepatic vasculature.Background: Due to the embryonic origin of the hepatic vasculature, variations can occur. Accurate knowledge of the hepatic arterial anatomy is essential in the field of transarterial liver interventions, including chemo-and radioembolisation of liver metastasis, allowing accurate tumour targeting whilst minimising the risk of non-target embolisation.Methods: 39 patients underwent work up for Selective Internal Radiotherapy. All had CT Angiography and Digital Subtraction Angiography (DSA) carried out and 22/39 underwent a DynaCT scan. The data was analysed retrospectively to determine vasculature branching, segmental vascularisation and Right Gastric Artery (RGA) origin. Results:The vasculature variations found in our patients was comparable to previous studies using Michel's Classification. The CT Angiography only located the RGA origin in 12.8% of the patients and it was seen in 87.1% of DSAs carried out. RGAs not found on DSA were located on DynaCT. Vascularisation was comparable to previous data, with segment 4 of the liver being supplied by leftsided circulation in 78% of patients with standard branching anatomy. Conclusion:Segmental vascularisation is a more relevant way to classify vasculature with respect to radioembolisation. DSA and DynaCT are useful at determining the RGA origin, with the latter providing more details of small vasculature.