When is the best time to do four dimensions?

In addition to allowing prospective parents to "see" their unborn babies in advance, the most important function of four-dimensional color Doppler ultrasound is that it can carry out various examinations on the fetus, so as to find problems in fetal growth as soon as possible, such as cleft lip and spina bifida. In addition, the image display of four-dimensional color Doppler ultrasound is clearer and more accurate than traditional color Doppler ultrasound and B-ultrasound. Therefore, for the health of pregnant women and fetuses, it is very necessary to choose four-dimensional color Doppler ultrasound for prenatal examination.

1, pregnant women can do four-dimensional color Doppler ultrasound at any gestational age. However, it should be noted that it is controversial to do four-dimensional B-ultrasound in the early pregnancy (before pregnancy 12 weeks). For safety reasons, it is suggested that the fetus should be examined by four-dimensional color Doppler ultrasound after 20 weeks of pregnancy.

2. The limbs and main organs of the fetus have all developed after 20 weeks of pregnancy. The best examination time is 24 -28 weeks of pregnancy, because the fetal structure has been formed at this stage, the fetal size and amniotic fluid are moderate, the fetal bone echo is relatively small, and the image is clear. Therefore, this period is the most ideal period for fetal malformation detection, and most malformations can be ruled out through inspection.

The instrument used in four-position color Doppler ultrasound is called "four-dimensional color ultrasound diagnostic instrument", which can obtain three-dimensional images in real time. It provides a variety of applications including abdomen, blood vessels, small organs, obstetrics, gynecology, urology, newborns, pediatrics, etc., and plays an important role in fetal abnormalities and avoiding the birth of defective children.