Fig. 1

Top row. Clinical case of a 54 years old male with hepatocellular carcinoma [HCC] (diameters: 25 × 23 mm) in segment 6. a digital subtraction angiography (DSA) obtained with injection from common hepatic artery demonstrates a hyper vascular tumor (circle); b selective DSA with inflated balloon micro-catheter (arrow) confirms the HCC (circle). c, d show the arterial phase of contrast enhanced computed tomography which demonstrate complete response at 1 month (c) and persisting complete response at 6 months (d). Bottom row. Clinical case of a 61 years old female with HCC (diameters: 22 × 21 mm) in the segment 4. e, f DSA from common hepatic artery and super-selective DSA with micro-catheter, respectively, demonstrate the HCC (circle). g MR imaging follow-up in hepatobiliary phase shows complete response at 1 month (circle); h at 6 months follow-up, computed tomography in arterial phase shows only a partial response