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Parameter analysis in stereoelectroencephalography-guided radiofrequency thermocoagulation: A common basis for

Luca Zanuttini1, Federico Mason2, Lorenzo Ferri1

  • 1IRCCS Istituto delle Scienze Neurologiche di Bologna, Full Member of the European Reference Network EpiCARE, Bologna 40139, Italy; Department of Biomedical and Neuromotor Sciences, Alma Mater Studiorum - University of Bologna, Bologna 40126, Italy.

Epilepsy Research
|November 5, 2024
PubMed
Summary

Analyzing electrical parameters during stereoelectroencephalography-guided radiofrequency thermocoagulation (SEEG-guided RF-TC) offers a method to compare protocols. This study provides insights into impedance changes during SEEG-guided RF-TC procedures.

Keywords:
Epilepsy surgeryParameter analysisRadiofrequency-thermocoagulationStereoelectroencephalography

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Area of Science:

  • Neurosurgery
  • Neurology
  • Medical Devices

Background:

  • Stereoelectroencephalography-guided radiofrequency thermocoagulation (SEEG-guided RF-TC) is an invasive brain lesioning technique.
  • Existing SEEG-guided RF-TC protocols lack standardization, necessitating objective comparison methods.

Purpose of the Study:

  • To analyze electrical parameters during SEEG-guided RF-TC procedures.
  • To develop a method for objectively describing and comparing different SEEG-guided RF-TC protocols.

Main Methods:

  • Electrical parameters (voltage, current, impedance, power) were measured during 92 SEEG-guided RF-TC procedures.
  • An algorithm detected impedance raises indicating thermocoagulation.
  • Parameter curves were compared across different brain structures using a two-sample t-test.

Main Results:

  • Impedance increased from ~700Ω to 1300Ω during procedures, showing erratic patterns with multiple peaks.
  • Parameter trends were similar until the first impedance peak, then influenced by subsequent raises.
  • No significant correlations were found between parameter changes in distinct anatomical sites.

Conclusions:

  • Systematic analysis of electrical parameters provides a reliable method for comparing SEEG-guided RF-TC protocols.
  • This approach may help identify optimal configurations for future SEEG-guided RF-TC procedures.