The principle of HIFU piezo ceramic tumor treatment is to concentrate the ultrasound energy into the disease tissue by a certain focusing method.due to the strong energy deposition of the focal point, makes the focal region in a short time (0.5-5s).The target tissue temperature rises above 60C, whic

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

The designing parameters of the HIFU piezo ceramic directly affect the performance and production cost of the system. This paper is based on the existing hardware foundation of the laboratory, based on the spherical crown ultrasonic array model, the basic design of the probe parameters is proposed.

The following figure shows the time peak of sound pressure obtained after the spherical crown model array A is deflected by different distances in the positive direction of the X axis.Where a and e, b and f, C and g, d and respectively are the HIFU piezo ceramics deflected by 0 mm in the positive di

People try to optimize the probe's array design parameters (such as array elements, array elements, etc.), optimizing the acoustic matching components of the probe, array element shape, size, fill rate, optimize the sound field meter for probe design and calculation method, optimizing. The signal mo

HIFU uses secondary HIFU piezo ceramic technology to transmit ultrasonic waves from multiple probes to outside the patient's body, and focuses of the lesion to form a high-intensity focal spot similar to the size of rice. Producing high temperature to burn cancer cells. For the purpose of treatment,

Almost all methods must measure the acoustic characteristics of various tissues and their temperature characteristics, and these parameters usually vary from tissue to tissue, which brings difficulties in ultrasonic non-destructive temperature measurement technology. This is an urgent need to solve

The planetary deceleration technology can make the precision of scanning reach 0.01mm, and then use the medium and high grade B-ultrasound and Hifu piezoelectric crystal treatment system to form IC parts, it guides the positioning and target tissue, and implement the monitoring effect. For the first

The measurement of 250Khz hifu piezo is mainly the focus sound field characteristic - it is the focusing parameter. Because ultrasonic waves are prone to cavitation and nonlinear effects under water and human tissues, it is unpredictable factors, especially the focused sound field characteristics of

The maximum sound pressure and the rising temperature is produced by the two sound sources differ greatly, but the ratio of the maximum temperature rise to the maximum sound absorptivity is almost the same.High intensity focused piezoelectric ceramic is indicating that the efficiency of the absorpti

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

Multi-array HIFU piezo ceramic ultrasound transducers can also be divided into two types, one is pure multi-array form, and the other is multi-phase phased array focusing. A pure multi-array element generally places a plurality of piezoelectric ceramic sheets in the concave spherical surface of seve

High intensity focused ultrasound(HIFU)technology asa non is an invasive treatment way that have been used in tumor disease,which will make the ultrasound piezo be in the target region under the thermal effects,cavitation effects and mechanical effects of ultrasound .The lesions could be destroyed

dielectric loss and piezoelectric constant of piezoelectric ceramic