Is there a difference between four dimensions and big row?

4-D color Doppler ultrasound and large row is no difference, because do 4-D color Doppler ultrasound is to carry out large row of abnormal examination. Mainly for pregnant women around 24 weeks, after doing 4-D color Doppler ultrasound to check whether there is any abnormality in the fetal substantive organs. Because at 24 weeks of pregnancy, fetal fat deposition is relatively small, while amniotic fluid volume is also relatively large, so after doing 4-D color Doppler ultrasound can clearly see the fetal body's substantive organs, rule out whether there is a malformation problem. This is a must-do examination for every woman during pregnancy, because if four-dimensional ultrasound is not done, but the fetus is deformed, it will bring a huge burden to the family and society after birth, and may even show death after birth.