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Essential Techniques for Successful Radio-frequency Thermal Ablation of Malignant Hepatic Tumors¹

¹ From the Department of Diagnostic Radiology, Hanyang University Hospital, 17 Haengdang-Dong, Sungdong-Ku, 133-792 Seoul, Korea (H.R., O.K.C.); Department of Radiology, Beth Israel Deaconess Medical Center, Boston, Mass (S.N.G.); Department of Radiology, University of Texas Health Science Center, San Antonio (G.D.D.); Department of Radiology, Ospedale Generale, Busto Arsizio, Italy (L.S., M.T.); and Department of Radiology, Samsung Medical Center, Seoul, Korea (H.K.L.). Presented as an education exhibit at the 2000 RSNA scientific assembly. Received February 9, 2001; revision requested April 20 and received May 30; accepted June 7. Address correspondence to H.R. (e-mail: rhimhc@hanyang.ac.kr).

Radio-frequency thermal ablation is one of the most promising minimally invasive techniques for the treatment of nonresectable hepatic tumors. Essential technical tips to successful radio-frequency ablation therapy were collected from five international experts. They were organized into five categories: understanding the mechanisms and principles of radio-frequency ablation, modulation of tissue physiologic characteristics to increase tumor destruction, strategies of overlapping ablations, strategies to improve ablation according to tumor location, and imaging strategies after ablation to ensure adequate therapy. Established factors for optimal ablation, as well as emerging technical tips, are addressed with illustrations in each section. These essential tips will be very helpful for physicians performing radio-frequency ablation of hepatic tumors.

Index Terms: Interventional prodecures, technology • Liver, interventional procedure, 761.1269 • Liver neoplasms, therapy, 761.1269 • Radiofrequency (RF) ablation

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