Simulation of multi-probe radiofrequency ablation guided by optical surgery navigation system under different active...

Area of Science:

• Medical Physics
• Oncology
• Surgical Technology

Background:

• Radiofrequency ablation (RFA) is a minimally invasive liver cancer treatment with limitations in puncture accuracy and large tumor ablation.
• Optical surgery navigation systems enhance RFA puncture accuracy.
• Multi-probe RFA is used clinically for large liver tumors.

Purpose of the Study:

• To develop and evaluate a multi-probe RFA model using finite element method (FEM) combined with an optical surgical navigation system.
• To analyze the effectiveness of different active modes in two-probe RFA simulations on a 3D liver model.
• To provide insights for optimizing RFA surgical planning and virtual surgery platforms.

Main Methods:

• Developed a multi-probe RFA model using FEM.
• Integrated the model with a self-developed optical surgical navigation system.
• Performed two-probe RFA simulations on a real 3D liver model under various active modes, analyzing temperature, electric potential, and cell necrosis.

Main Results:

• Simulation results demonstrated that different active modes in two-probe RFA have distinct advantages and are suited for specific clinical scenarios.
• The study analyzed temperature and electric potential fields, alongside cell necrosis, to evaluate RFA effectiveness.
• The developed model and simulation approach provide a virtual platform for RFA planning.

Conclusions:

• The combination of multi-probe RFA and optical navigation offers improved accuracy and efficacy for liver cancer treatment.
• Understanding the advantages of different active modes aids in personalized surgical planning.
• The virtual surgery platform facilitates preoperative planning and further development of RFA techniques.