1922, the first invention patent of ultrasonic therapy appeared in Germany.
1939 published a literature report on the clinical effect of ultrasonic therapy.
In the late 1940s, ultrasonic therapy rose in Europe and America. It was not until the first international conference on medical ultrasound held in 1949 that papers on ultrasound therapy were exchanged, which laid the foundation for the development of ultrasound therapy. 1956 many papers were published in the second international congress of ultrasound medicine, and ultrasound therapy has entered a practical and mature stage. In China, the field of ultrasound therapy started late, and only a few hospitals carried out ultrasound therapy in the early 1950s. From 65438 to 0950, the ultrasonic therapeutic machine with the frequency of 800KHz was first used in Beijing to treat various diseases, and it was gradually popularized in the 1950s, with domestic instruments. The published literature report began at 1957. In the 1970s, various types of ultrasonic therapeutic instruments appeared in China, and ultrasonic therapy was popularized in major hospitals all over the country.
Over the past 40 years, major hospitals in China have accumulated a considerable amount of information and rich clinical experience. Especially in the early 1980s, ultrasonic extracorporeal mechanical wave lithotripsy (ESWL) and ultrasonic surgery appeared, which was a major breakthrough in the treatment history of lithiasis. Now it has been popularized and applied internationally. High intensity focused ultrasound noninvasive surgery makes ultrasound therapy occupy an important position in contemporary medical technology. In 2 1 century (HIFU), focused ultrasound surgery is regarded as the latest technology for treating tumors in 2 1 century.