Design and comparison of semi-ellipsoidal and conical phased array applicators operating at 434 MHz for hyperthermia treatment of locally advanced breast cancer

Hyperthermia as an adjuvant to chemotherapy and radiation therapy is a promising treatment modality for deep seated breast tumors where phased array antennas positioned around the breast are used to steer the power inside the tumor. In this work, we present semi-ellipsoidal and conical shaped phased array (PA) applicators for targeted hyperthermia treatment of locally advanced breast cancer. Both PA configurations have 18 patch antennas arranged in three rings operating at 434 MHz. Electromagnetic simulations of the two PA configurations are presented for a layered three-dimensional breast model to assess their ability to deliver targeted power. Preliminary results suggest better power deposition characteristics for the conical PA applicator.