Research and implementation of single point focusing system based on planar array ultrasonic transducer

Abstract

Ultrasound hyperthermia treatment is an advanced method of tumor treatment developed in recent years. Different from traditional tumor cutting and chemotherapy, it has the advantages of non-invasive, reducing patients’ pain and recovery time. The focus of ultrasound is one of the key technologies of this treatment technology. In this paper, a phased array ultrasound focus system is designed. Combined with the 256 element planar array ultrasonic transducer, the single point focus and three-point focus of ultrasound are realized by using time inversion method. The intensity distribution map is drawn by MATLAB, and the actual intensity distribution is detected by using the horizontal plane, which verifies the correctness of the method it can enhance the energy density of the emitted ultrasound and shorten the treatment time.