Large-scale ovulation is a routine prenatal screening method, which comprehensively examines the fetus through ultrasonic technology, including the shape and structure of the head, limbs, spine, heart, lungs, abdomen and other organs, as well as placenta and amniotic fluid. Large ovulation is mainly used to detect whether there are congenital malformations or abnormalities in the fetus, such as cleft lip, cleft palate and heart defects.
Four-dimensional ultrasound, on the other hand, adds a time dimension to three-dimensional ultrasound, which can observe the movement and behavior of the fetus in real time, including expression, sucking fingers, kicking and so on. Four-dimensional ultrasound can show the fetal situation more vividly, so that parents can better understand the growth and development of the fetus.
In a word, large-scale rejection mainly focuses on the structure and shape of the fetus, while four-dimensional ultrasound pays more attention to the behavior and performance of the fetus. Both of them are very important means of prenatal examination, which can help doctors find fetal problems in time and take corresponding measures.