ULTRASOUND THERMOTHERAPY OF BREAST: THEORETICAL DESIGN OF THE TRANSDUCER AND NUMERICAL SIMULATION OF THE PROCEDURE

Purpose: The absorbed energy of ultrasound is changed into heat in a dissipative medium. This could be of great advantage in treating tumors in a non-invasive manner by raising their temperature to cytotoxic levels. This study investigates whether using a fixed-focus transducer could destroy breast tumor cells at early stages in a cost effective manner which reduces the treatment time significantly. Methods and Materials: An appropriate fixed-focus transducer was designed and the resultant acoustic pressure has been calculated using rayleigh integral. A rael two dimensional breast model has been constructed from…