The price of 4D ultrasound is usually around$500. 4D ultrasound is currently the most advanced ultrasound examination in the world, which can be used for multiple organs of the whole body, such as abdomen, small organs, gynecology and so on. However, it is still widely used clinically for fetal ultrasound, and public hospitals generally use 3D ultrasound. If you want to do a major fetal abnormality, it is recommended to do 4D ultrasound after 20 weeks of pregnancy, because there are still controversies about 4D ultrasound in early pregnancy. Especially before 12 weeks of pregnancy, 4D ultrasound is not recommended, and most 3D ultrasound will solve the common major problems.