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Modelos Teóricos basados en Métodos Numéricos de un Aplicador Cool-tip para Ablación RF de Tumores: Relación entre la Temperatura y la Impedancia

  • M. Trujillo
  • R. Romero
  • E. Berjano
Conference paper
Part of the IFMBE Proceedings book series (IFMBE, volume 33)

Abstract

We have analyzed by means of theoretical mod-els (Finite Difference Method FDM, and Finite Elements Me-thod FEM) the relation between the temperature distributions around a Cool-tip RF electrode for tumor ablation, and the progress of the electrical impedance. The results suggest that the sudden impedance increase (aka roll-off) is produced just when the strongly desiccated tissue (temperatures around 100°C) totally encircles the electrode. The desiccated tissue is characterized by a very low electrical conductivity. This result could suggest an explanation for the electrical-thermal performance of other kind of electrodes in which a saline infusion is combined with the internal cooling.

Palabras claves

ablación por radiofrecuencia ablación de tumores diferencias finitas elementos finitos 

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Copyright information

© Springer Berlin Heidelberg 2013

Authors and Affiliations

  • M. Trujillo
    • 1
  • R. Romero
    • 2
  • E. Berjano
    • 3
  1. 1.Instituto Universitario de Matemática Pura y AplicadaUniversidad Politécnica de ValenciaValenciaEspaña
  2. 2.Facultad de IngenieríaUniversidad Autónoma de San Luis PotosíSan Luis PotosíMéxico
  3. 3.Biomedical Synergy, Dpto. de Ingeniería ElectrónicaUniversidad Politécnica de ValenciaValenciaEspaña

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