Common electrode configuration
8 Dec 2010There is a common intermediate configuration, when both electrodes are located on the same probe, but the return electrode is much larger than the active one. Since current density is higher in front of the smaller electrode, the heating and associated tissue effects take place only (or primarily) in front of the active electrode, and exact position of the return electrode on tissue is not critical. Sometimes such configuration is called sesqui polar, even though the origin of this term in Latin (sesqui) means a ratio of 1.5
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