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. Author manuscript; available in PMC: 2011 Aug 1.

Published in final edited form as: J Vasc Interv Radiol. 2010 Aug;21(8 Suppl):S192–S203. doi: 10.1016/j.jvir.2010.04.007

Non-cooled antennas can cause proximal tissue heating, creating an unwanted tail of ablation in the more superficial tissues, as seen in this photograph of a hepatic microwave ablation zone (arrow, a). However, cooling eliminates this unwanted shaft heating and ablation tail, as seen in (b), a hepatic ablation zone generated with an identical power and time but with the addition of water cooling of the antenna shaft.

Non-cooled antennas can cause proximal tissue heating, creating an unwanted tail of ablation in the more superficial tissues, as seen in this photograph of a hepatic microwave ablation zone (arrow, a). However, cooling eliminates this unwanted shaft heating and ablation tail, as seen in (b), a hepatic ablation zone generated with an identical power and time but with the addition of water cooling of the antenna shaft.