Radiofrequency ablation occlusion

Rhim H (2003) Percutaneous radiofrequency ablation therapy for patients with hepatocellular carcinoma during occlusion of hepatic blood flow comparison with standard percutaneous radiofrequency ablation therapy. Cancer 98(2) 433-434... 

Yamasaki T, Kimura T, Kurokawa F et al (2005) Percutaneous radiofrequency ablation with cooled electrodes combined with hepatic arterial balloon occlusion in hepatocellular carcinoma. J Gastroenterol 40 171-178... 

The technique, patient selection and main complications are similar to those for radiofrequency and laser ablation. The procedure is usually guided with ultrasound or CT. Microwave treatment produces coagulation within 60 s at a power setting of 60 W. However, the area of coagulation is smaller than that achieved after laser or radiofrequency and it is necessary to repeat the treatments several times a week in order to achieve a sufficiently large area of tumour necrosis. As with RF ablation, occlusion of segmental hepatic blood flow has been used with microwave ablation in the treatment of hepatocellular carcinoma to increase the size of the ablative lesion (Ishida et al. 2002). The use of multiple antennae is another technique, which has been described to achieve an increased volume of tumour necrosis (Wright et al. 2003 Xu et al. 2004). 

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