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

In recent years, the application of HIFU piezo transducer ultrasound in the field of tumor treatment has been widely concerned at home and abroad. It has been reported that nearly 10 domestic manufacturers have invested a lot of manpower and resources to develop in the clinical applications in the m

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

HIFU piezo for ultrasonc knife has the outstanding advantages of no pain, no surgery, short side effects, short treatment and recovery time, which has become a hot spot in the research of tumor treatment equipment. However, due to its therapeutic effect, it has yet to be extensively clinically teste

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

1 IntroductionWith the development of new technologies such as automation, the number of ultrasonic transducers is increasing, and all modern instruments and equipment are inseparable from sensors in the industrial production, especially in the production processes, various transducers are used to m

At present, there are two types of ultrasonic transducer sensor, one is an in-vehicle integrated probe, other is an integrated transmitting and receiving probe . The other is a separating design for sending and receiving. The basic principle of its implementation is that the transmitting probe emits

Ultrasonic position sensor adopts the principle of ultrasonic echo measurement. It uses different measurement technology to detect the distance between the sensor . The ultrasonic sensor with small angle and small blind area has the advantages of accurate measurement, no contact, waterproof, anti-co

Principle and application of ultrasonic position sensorUltrasound waves is a general term for mechanical waves whose frequency exceeds the human 's auditory frequency limit (approximately 20 kHz). Ultrasonic waves are generated by vibration transducer under the excitation of voltage. Distance measur

An acoustic ranging sensor is developed to measure the separation distance between rocket stages. The structure is a radioactive source and exploration.The distance measuring transducers are mounted face-to-face on two-stage rockets, and the number of particles detected during the separation process

Signal transmission refers to the way in which the high-temperature piezos discs transducer of thin-film sensor is fabricated on the component or structure, and the method of supplying power and taking power is to measure signals such as strain and temperature. High-temperature areas of PZT piezocer

Manufacturing processManufacturing processes often affect the performance of high temperature piezoelectric vibration sensor. it is annealing, doping the atmosphere, sputtering pressure, temperature and other process parameters have a great influence on the sensitivity coefficient,it is the temperat

The typical thin film strain gauges and thermometers are used on the surface of piezo ceramic element.which are generally composed of multiple layers of piezo materials. The alloy substrate is followed by a transition layer, an insulating layer, a functional layer, and a protective layer, as is show

Sensitive materialSensitive materials are the core components of high-temperature thin-film sensors. Their chemical and electrical stability have a great influence on piezoelectric rings vibration sensor whether thin-film sensors can be used in harsh environments. The kinds of sensitive materials, t