The cost of a 4D ultrasound varies according to the region where the hospital is located and the level of the hospital. Each hospital does not have the right to set its own prices, and the medical charges of each hospital are jointly set by the local health administrative department and the price department according to the specific conditions of the region. Because the four-dimensional color ultrasound on the use of the machine requirements are relatively high, are generally high-end ultrasound machine, this ultrasound machine acoustic image of the display is more clear, more convenient for clinical judgment of fetal malformation and other diseases, and the purchase of such ultrasound machine costs at least a million. In addition, the clinic in the four-dimensional ultrasound, the ultrasound physician’s skill level has certain requirements, generally have more than five years of clinical experience and prenatal diagnosis training, and even many hospitals are required to be the attending physician or more can be four-dimensional ultrasound examination. The 4D ultrasound examination is more comprehensive than other pregnancy ultrasounds, so the cost of the 4D ultrasound examination is the most expensive in the whole pregnancy ultrasound examination. The cost varies from hospital to hospital, for example, the cost of a regular ultrasound is around$80, while the cost of a 4D ultrasound is usually around$280.