Bimodal electric tissue ablation (BETA) compared with the Cool-Tip RFA system

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dc.contributor.authorTiong, L.
dc.contributor.authorField, J.
dc.contributor.authorMaddern, G.
dc.date.issued2012
dc.description.abstractBackground:  Bimodal electric tissue ablation (BETA) incorporates the process of electrolysis into radiofrequency ablation (RFA) to increase the size of tissue ablation. This study investigated whether BETA could increase the efficacy of the Cool-Tip RF system (Covidien, Boulder, CO, USA) to produce larger ablations. It also investigated whether applying electrolysis only during the pretreatment phase (called electrochemical treatment (ECT)/RFA group) is as effective as BETA (where electrolysis was used during both the pretreatment and RFA phases). Methods:  A Cool-Tip RF system (Covidien) was used to test three types of ablations (RFA, BETA, and ECT/RFA) in a pig liver model. In BETA, 9 V of direct current was provided for 10 min, after which the RF generator was started and both electrical circuits were allowed to run concurrently. In ECT/RFA, however, the direct current circuit was switched off after 10 min of pretreatment and only RFA was performed as described above. Ablation sizes were measured in three dimensions. Results:  The size of ablations (transverse diameter A and B) produced by BETA and ECT/RFA was significantly larger compared with standard RFA (P < 0/001). BETA also created larger ablations compared with ECT/RFA (P < 0.001). Conclusion:  BETA could improve the efficacy of the Cool-Tip RF system (Covidien) to achieve larger ablations. The increased tissue hydration improved delivery of electrical energy to the tissues and delayed the process of desiccation, thus allowing the ablation process to continue for longer periods of time to produce larger ablations. BETA could be used to treat larger liver tumours more effectively than standard RFA.
dc.description.statementofresponsibilityLeong Ung Tiong, John B. F. Field and Guy J. Maddern
dc.identifier.citationANZ Journal of Surgery, 2012; 82(4):269-274
dc.identifier.doi10.1111/j.1445-2197.2011.05990.x
dc.identifier.issn1445-1433
dc.identifier.issn1445-2197
dc.identifier.orcidMaddern, G. [0000-0003-2064-181X]
dc.identifier.urihttp://hdl.handle.net/2440/73207
dc.language.isoen
dc.publisherBlackwell Science Asia
dc.rights© 2012 The Authors
dc.source.urihttps://doi.org/10.1111/j.1445-2197.2011.05990.x
dc.subjecthepatopancreaticobiliary surgery
dc.subjectliver cancer
dc.subjectradiofrequency ablation
dc.subjectsurgical oncology.
dc.titleBimodal electric tissue ablation (BETA) compared with the Cool-Tip RFA system
dc.typeJournal article
pubs.publication-statusPublished

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