Radiofrequency ablation in a porcine liver model: Effects of transcatheter arterial embolization with iodized oil on ablation time, maximum output, and coagulation diameter as well as angiographic characteristics

Figure 1 Portography revealing occlusion of distal small portal vein branches in the ablated area (arrow) (A) and hepatic arteriography showing a compensatory increase in hepatic arterial blood flow in response to occlusion of the portal vein branches (arrow head) (B) in group with RFA alone.

Figure 2 Portography revealing a decrease of portal venous blood flow in the left lobe after LP-TAE before RFA (arrow) (A) and photograph of liver showing the dark red left lobe after LP-TAE before RFA (arrow head) (B).

Figure 3 Portography showing large branches of portal veins have disa-ppeared (arrow) after RFA following LP-TAE.

Figure 4 Region of necrosis avoiding large vessels (white arrow) in group with RFA alone (A), and showing ill-defined boundaries of coagulation necrosis and increase of the necrotic area in the group with RFA following LP-TAE (B).