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

For a multivariate linear array transducer with Zn+1 array elements, if all the array elements emit sound waves at the same time,Let the sound pressure value of the array element at point F be p: then the total sound pressure of point F value is: pSince the distances of the respective line elements

Mechanical sector scanning is performed by a motor driven by a single or multiple piston transducers around a fixed axis or a scanning system formed by rotation. Usually the transducer is placed in a container filled with liquid, the entire system is close to keep contact with the surface of the hum

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,

With the development of science and technology, the non-destructive testing technology of temperature field has made great progress, and some non-destructive side temperature methods of HIFU piezo ceramic have been proposed.Such as electrical impedance tomography, magnetic resonance (M IR) ultrasoun

The measurement of ultrasonic working frequency, focal length, focal spot, sound intensity, side lobes and other key parameters and the quality of the focused sound field are the key to HIFU piezo ceramictechnology engineering, which have an inseparable relationship with the performance, efficacy an

With the development of HIFU piezo ceramic technology, the HIFU technology has attracted great attention on the engineering and medical circles. Many units in China have carried out research and development and clinical application of HIFU equipment, and have achieved remarkable results. this paper

(1) About planar annular array transducer. A concentric small circular area is dug in the center of the circular piston source to form an annular planar sound source.The sound pressure generated by the annular planar sound source at any point in space can be regarded as the sound pressure generated

Heating tumor tissue has become one of the important methods for treating tumors. Ultrasound has become an important heating treatment because of its characteristics of easy to produce,it is focusable and invasive. In recent years, HIFU piezo for thermoplastic weight heating therapy technology has d

Considering the basic requirements of real-time imaging of tumor treatment ,It includes compatibility considerations and cost control requirements of the ultrasound therapy machine itself, the domestic commercial HIFU piezo ceramic ultrasound tumor treatment machine has selected B-ultrasound as for

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