Pregnant women do four-dimensional main check what

4D results can show real-time motion images of the unborn baby, or other internal organs of the human body, mainly to check whether there are abnormalities in fetal development. The examination time is generally 22 weeks to 28 weeks of pregnancy. Four-dimensional color ultrasonic diagnostic instrument is the most advanced color ultrasonic equipment in the world at this stage. Four-dimensional ultrasound, also known as systematic ultrasound in clinical practice, can observe the fetal activities in real time, stereo and intuitively, and can display the fetal color, face and development of various organs in three-dimensional manner. The state of the fetus in the mother can also be observed. It can diagnose fetal malformations early, such as cleft lip, cleft palate, skeletal abnormalities, cardiovascular malformations, etc.