Real-Time Calculation Method for Temperature Distribution of Temperature-Controlled Radiofrequency Ablation

【摘要】 Precise temperature control and temperature distribution prediction are of great significance for radiofrequency ablation.This research proposes a real-time calculation method for the temperature distribution of radiofrequency ablation combined with proportional-integral temperature control.The thermo-electrical coupling was simplified into a linear relationship based on the study of the influence of temperature-dependent electrical conductivity and thermal conductivity on the PI-controlled radiofrequency ablation temperature distribution,which increases the computational efficiency by 150 times.The average calculation time for radiofrequency ablation of 10 min is about 23 s,and the difference between the calculation results of this method and that from COMSOL Multiphysics is no more than 1 ℃.This method is not only used for single-probe,but also for doubleprobe radiofrequency ablation in this paper.更多还原

【Abstract】 Precise temperature control and temperature distribution prediction are of great significance for radiofrequency ablation.This research proposes a real-time calculation method for the temperature distribution of radiofrequency ablation combined with proportional-integral temperature control.The thermo-electrical coupling was simplified into a linear relationship based on the study of the influence of temperature-dependent electrical conductivity and thermal conductivity on the PI-controlled radiofrequency ablation temperature distribution,which increases the computational efficiency by 150 times.The average calculation time for radiofrequency ablation of 10 min is about 23 s,and the difference between the calculation results of this method and that from COMSOL Multiphysics is no more than 1 ℃.This method is not only used for single-probe,but also for doubleprobe radiofrequency ablation in this paper.更多还原