Taking the simulation model of HIFU for breast tumor as a reference, establishing the additional transducer as shown in the figure .A three-dimensional simulation model of human body is fat or muscle tissue with a certain angle of sound, and is carried out in three dimensions simulation calculation,

In this section, we designed a HIFU piezo ceramic treatment array with 125 channels and the array column structure was simulated by sound field, and the theoretical analysis of the array was continuous with the excitation signal at the frequency 2MHz. the result of single-point focusing under the st

In the field of cancer treatment, high-intensity focused ultrasound HIFU tumor treatment technology is the fourth new tumor treatment technology after surgery, chemotherapy and radiotherapy. The common HIFU piezo ceramic in the clinic is to use the ultrasonic medium to radiate energy to the tumor si

In order to realize the HIFU ultrasound piezo, the traditional methods mostly use a single frequency ultrasonic transducer, and the use of the same focusing system to achieve the focus of the two frequency ultrasound is rarely reported. In 1996, Japanese scholar S. Umemura et al. studied a technique

This method is simple in the idea and convenient to implement, but because the image accuracy of the B-ultrasound itself is not high, and the information contained the two orthogonal sections itself which is not enough to represent the entire lesion itself, the shape of the tumor is not mostly elli