Experimental Validation for Microwave Based Real-time Monitoring for Microwave Ablation Treatment

Area of Science:

• Medical Imaging
• Biomedical Engineering
• Electromagnetics

Background:

• Minimally invasive treatments like microwave ablation (MWA) require precise monitoring.
• Accurate, real-time imaging of the ablation zone is crucial for effective and safe cancer therapy.
• Current monitoring methods may lack the necessary speed and accuracy for dynamic ablation processes.

Purpose of the Study:

• To develop a novel, real-time 3D imaging method for monitoring microwave ablation (MWA).
• To enhance the safety and efficacy of MWA treatments for cancerous tissues.
• To introduce advanced algorithms for boundary reconstruction and complex permittivity estimation.

Main Methods:

• Development of a novel boundary reconstruction algorithm for MWA monitoring.
• Introduction of an S11-based complex permittivity estimator for ablation boundary determination.
• Utilizing the finite difference time domain (FDTD) method for 3D numerical simulations.
• Experimental validation of the proposed imaging technique.

Main Results:

• The proposed algorithm achieves real-time, accurate, and noise-robust boundary reconstruction.
• The S11-based estimator enables precise estimation of the ablation boundary.
• Both numerical simulations and experimental results confirm high-speed, accurate 3D imaging of the ablation zone.
• The method demonstrates significant potential for improving MWA monitoring.

Conclusions:

• The developed microwave-based monitoring system offers accurate and high-speed 3D imaging of the ablation zone.
• This technology enhances the safety and effectiveness of microwave ablation for cancer treatment.
• The novel algorithms provide a robust solution for real-time monitoring of dynamic ablation processes.