The difference between 3D and 4D color Doppler ultrasound
The difference between 3D color Doppler ultrasound and 4D Color Doppler ultrasound is mainly in a “time dimension”, that is to say, 3D Color Doppler ultrasound is a picture, which is static, and 4D Color Doppler ultrasound is a video, which is dynamic and can make the pregnant mother sees a series of movements of the fetus, so the 4D color ultrasound will be more clear.
The 3D color ultrasound can only be a photo at a certain point in time. The 4D color ultrasound can be made continuous as DV and can be burn to discs.
3D color Doppler ultrasound focused on observing whether the five internal organs and six organs were deformed, and ruled out structural deformities. 4D color ultrasound also observes whether the motor nervous system is normal and whether the movement is coordinated.
In the sense of diagnosis, 3D color Doppler ultrasound and 4D color Doppler ultrasound do not have any more advantages for diagnosis, but only people who do not understand B-mode ultrasound images can also see the appearance. This means that you can see how your baby is while the baby is still in the stomach.
Which effect is better for 3D and 4D color Doppler ultrasound
The 4D color ultrasound can display the color, surface, and development of various organs of the fetus, and even the status of the fetus in the mother. Observation of fetal malformations, such as cleft lip, cleft palate, abnormal bone development, and cardiovascular malformations, can be diagnosed early.
Understanding a fetal movement process in the fetal uterus, and dynamically recording the fetal intrauterine status can allow pregnant mothers to see a series of movements of the fetus, so the 4D will be more clear and can be retained as a permanent memorial.
Moreover, there is no radiation of rays, light waves and electromagnetic waves in the 4Dl color Doppler ultrasound, and it has no impact on human health. There is no report of any impact on human health in medicine today.
When to do 3D and 4D ultrasound
The best time for 3D and 4D color Doppler ultrasound is during 22-28 weeks. During this period of examination, because the fetus is small, the amniotic fluid is large, the fetal activity is large, and the body surface is also full, which is conducive to 4D ultrasound imaging and fetal malformation.
At 12-16 weeks of pregnancy.
To observe the overall image of the fetal head, frame and limbs displayed on the same slice. In addition, the overall coordination of the fetus’s activities can be observed.
At 22-28 weeks of pregnancy
Severe fetal malformations can be found in time such as anencephaly, severe brain bulging, severe open spina bifida and lethal cartilage dysplasia
At 28-32 weeks of pregnancy
During this period, the baby’s subcutaneous tissue is fuller and his facial expression is richer, and he is also ready for delivery.