The use of HIFU piezo ceramic to treat local tumors, how to enhance the treatment effect and minimize the radiation damage to healthy areas is an important issue. In response to this problem, many researchers have designed and developed some new transducers. Some researchers have proposed to use mul

This type of transducer is a type of transducer that has been discussed in recent years. Its design is based on the Huygens principle. The transducer is arranged in an array in a space by a plurality of mutually independent piezoelectric wafers. Each wafer is called an array element. When each array

Compared with surgery, HIFU ceramic transducer for machine is non-invasive and has few complications. Compared with radiotherapy, H IFU can obtain a therapeutic dose in one irradiation, and can also repeat the treatment of residual lesions or locally recurring lesions. The use of H IFU does not excl

Different parameters of piezoelectric ceramics can be selected according to the needs of the therapeutic dose at the time of treatment to achieve the best effect. Highly vascularized tumors although clinical exposure times often take more than 3s, early studies have shown that short-term exposure is

About immune function, who observed the tumor regressed at the same time, the distant metastasis also subsided that HIFU treatment can improve the body's specific and non-specific immunity to tumors. The killing effect of tumor cells can indirectly promote the development and maturation of helper ly

The current preferred method for curing tumors is still surgical resection. Advances in science and technology have led to the development of open surgery to a smaller trauma. Various interventional is minimally invasive treatment methods, including percutaneous radio frequency ablation and microwav

Fiber grating refers to a segment of fiber with grating function formed by changing the distribution of refractive index in the fiber by ultraviolet radiation. It only reflects a certain wavelength of wave, which is equivalent to a kind of mirror. When there is strain or temperature change, it will

High intensity focused ultrasound (HIFU) has developed rapidly in recent years and has become a research hotspot in the medical ultrasound engineering field. HIFU surgery is to concentrate the low-intensity ultrasound in vitro into the body through a certain focusing method (acoustic lens, concave s

With the development of medical technology, high intensity focused ultrasound (HIFU) has been widely developed at home and abroad as a new non-invasive tumor treatment technology, and has achieved significant clinical results, especially in the treatment of uterine fibroids and good clinical results

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,

At present, the methods for studying the sound field of HIFU piezo ceramic mainly include experimental measurement methods and numerical simulation methods.The methods for measuring high-intensity ultrasonic sound fields are mainly hydrophones, ultrasonic radiation balances and fiber optic sensors.t

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

HIFU piezo ceramic technology as a new clinical treatment method, mainly including extracorporeal shock wave lithotripsy (ESWL)therapy, HIFU tumor treatment and extracorporeal shock wave lithotripsy (ESWL) treatment technology. Extracorporeal shock wave lithotripsy is the use of ultrasound or lo

Medical ultrasound transducer can be divided into diagnostic ultrasound and therapeutic ultrasound. Diagnostic ultrasound is ultrasonic frequency of 1 to 10 MHz.The low-energy form is applied to the clinic, mainly for the purpose of extracting biological information, and Pzt material stripe piezo ce