Black and white four-dimensional ultrasound, which is currently the world's most advanced black and white ultrasound equipment, 4D Ultrasound technology is the use of 3D ultrasound images plus time dimension parameters, can obtain three-dimensional images in real time, it provides including abdominal, vascular, small parts, obstetrics, gynecology, a wide range of applications in urology, neonatal and pediatric and other areas, it is possible to display......