Transmission line approach for energy localization in wideband hyperthermia treatment system

This paper addresses energy localization for hyperthermia treatment, considering multichannel wideband system. A novel approach is developed based on a transmission line model to investigate the performance of the system and optimize excitation signals to achieve required energy focusing. Phase shift of excitation subcarriers corresponding to each of the system channels are estimated such that constructive interference of the electromagnetic energy is achieved at the tumor region and destructive interference is obtained at vital tissue locations. E-Field mapping is used and results reveal that the proposed model has the potential to optimize the excitation waveform shaping to achieve energy localization with adequate spatial resolution.