The 3D ultrasound for pregnant women should be done at the right week of pregnancy, and it depends on the normal development of the fetus as to whether or not it will pass, and there is not much human intervention that can be done for this. Three-dimensional ultrasound is mainly to check whether the fetus has structural abnormalities. Through 3D ultrasound, a three-dimensional image of the fetus can be obtained, and if the fetus has structural malformations, they can be detected. The 3D ultrasound is usually performed between 22 and 28 weeks of pregnancy, and appointments should be made in advance before the examination so as not to miss the time. Before the ultrasound, pregnant women can eat properly and should not go for the examination on an empty stomach. When you go for the examination, wear loose-fitting clothes that can easily reveal your abdomen. While waiting for the examination, you should not sit all the time, you can move around appropriately, which will allow the fetus to change its position and be easier to examine. After the 3D ultrasound, be sure to let your doctor review the results.