Application and characteristics of focused ultrasound:The low-frequency concave-convex piezoelectric ceramic transducer has been theoretically and finite-element-analyzed. The transducer has the characteristics of low resonance frequency, small impedance, high emission voltage response, small 360-de

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

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