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Effects of changes in the waveform and frequency of radio frequency energy on tissue ablation range

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Listed:
  • Jinsu An
  • Dong-Sung Won
  • Yubeen Park
  • Jung-Hoon Park
  • Ki-Hyeon Park
  • Ji-Ho Lee
  • Hyung-Sik Kim

Abstract

This study reports the effects of changes in the waveform and frequency of radio frequency (RF) energy on the tissue ablation range. We developed a 70-watt RFA generator that provides sine and square waves and allows frequency control between 10 Hz and 500 kHz. The changes in the ablation range according to the waveform and frequency were observed using the developed generator. In the waveform variation test, the distance between the electrodes and the electrode type were changed for both waveforms with the frequency set to 500 kHz. In the frequency variation test, the waveform and electrode type were changed with the frequency set to 10, 100, and 500 kHz, while the distance between the electrodes was set to 20 mm. A fixed 45 voltage was applied using the bipolar method. RF energy was applied for 90 s in vitro. The temperature was regulated to not exceed 70°C. The ablation range was calculated using ImageJ software. The analysis results showed that the ablation range was larger with the square wave than with the sine wave and at 10 kHz than at 500 kHz. The developed generator can advance research on ablation area and depth in RF ablation.

Suggested Citation

  • Jinsu An & Dong-Sung Won & Yubeen Park & Jung-Hoon Park & Ki-Hyeon Park & Ji-Ho Lee & Hyung-Sik Kim, 2024. "Effects of changes in the waveform and frequency of radio frequency energy on tissue ablation range," PLOS ONE, Public Library of Science, vol. 19(9), pages 1-12, September.
    • Handle: RePEc:plo:pone00:0308691
    DOI: 10.1371/journal.pone.0308691
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    1. Ronei Delfino da Fonseca & Paulo Roberto Santos & Melissa Silva Monteiro & Luciana Alves Fernandes & Andreia Henrique Campos & Díbio L Borges & Suélia De Siqueira Rodrigues Fleury Rosa, 2021. "Parametric evaluation of impedance curve in radiofrequency ablation: A quantitative description of the asymmetry and dynamic variation of impedance in bovine ex vivo model," PLOS ONE, Public Library of Science, vol. 16(1), pages 1-18, January.
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