The difference between four-dimensional color Doppler ultrasound and ordinary color ultrasound Four-dimensional color Doppler ultrasound provides a variety of applications in many fields such as abdomen, blood vessels, small organs, obstetrics, gynecology, fetal color Doppler ultrasound, urology, neonatal and pediatrics. The result: the ability to display live, dynamic images of an unborn baby or other internal organs of the human body. Compared with other ultrasound diagnostic procedures, it can observe the dynamic movement of the internal organs of the human body in real time. clinicians and