Animal B-ultrasound imaging displays realistic and intuitive graphics, and can be dynamically displayed in real-time, with high diagnostic value. At present, the basic structure of veterinary B-ultrasound diagnostic instruments used in clinical practice consists of four parts: probe, transmission circuit, reception circuit, and display system. The basic principle is pulse echo technology.

The ultrasound pulse beam sequentially scans the animal tissue in the scanning plane, and the echo signals generated reflect the acoustic characteristics of the tissue organs. By detecting these signals and displaying them in the form of two-dimensional images, the physiological and pathological characteristics of the tissue organs can be diagnosed.

Due to limited MCU capabilities, ordinary Veterinary Ultrasound diagnostic instruments cannot meet the requirements for ultrasound image storage, processing, and other aspects in clinical applications. Although high-end veterinary B-ultrasound machines imported from abroad have strong functions, they are expensive. At present, improving the diagnosis system of animal B-ultrasound with the help of PC machines

The ability to integrate has become a key trend, with the most common being the use of image acquisition cards in "ultrasound workstations". Some people have started a new system for animal B-ultrasound based on PC bus, while others have connected PC microcomputers with portable animal B-ultrasound through PC expansion cards. Due to the different drawbacks of the above methods, some people use USB to connect portable veterinary B-ultrasound machines with PCs and achieve powerful diagnostic functions.