How many weeks of pregnancy can I do color Doppler ultrasound

We all know that women need to do many prenatal checkups during pregnancy. Different prenatal checkups will be done at different times to detect different conditions of the fetus in the body. If women want to see the development of the fetus during pregnancy, they can do B-ultrasound or color ultrasound of the fetus. At this time, they can see the development status of the fetus in the belly. So, at how many weeks of pregnancy can a color ultrasound be done?

When it comes to color ultrasound or other prenatal examinations, you should pay attention to your time and precautions before the examination. After finding out that you are pregnant, you must do a good job of pregnancy checkups and pay close attention to what nutrients you need to supplement and what pregnancy tests you should do during the period. This can reduce the situation where some checkups are not done in time during pregnancy.

How often do four-dimensional color Doppler ultrasounds usually take place?

1. Four-dimensional color ultrasound can be performed at any time after 12 weeks of pregnancy, but it should be emphasized that there is currently controversy about doing four-dimensional color ultrasound in early pregnancy (before 12 weeks of pregnancy). For safety reasons, it is recommended to do fetal four-dimensional color ultrasound after 20 weeks of pregnancy. It is best not to exceed 28 weeks.

2. After 16 weeks of pregnancy, the fetus's limbs and major organs have all developed. The best time to check is between 22 and 26 weeks of pregnancy, and the amount of amniotic fluid is more suitable for fetal malformation screening.

3. When the fetus is about 24 weeks old, it is a period of rapid development. At this stage, the fetal structure has been formed, the baby's size and amniotic fluid are moderate, the baby has a large space to move around in the uterus, the fetal bone echo is relatively small, and the image is clearer.

4. Since everyone's physical condition is different, the time for four-dimensional color ultrasound examination is also different. You need to consult a doctor for specific details and decide the examination time based on the pregnant woman's physical condition and the actual situation of the pregnancy.

How long does it take to do an ultrasound during pregnancy?

1. Under normal circumstances, pregnant women should have an ultrasound examination in the early stages of pregnancy (around 12 weeks of pregnancy). Avoid doing B-ultrasound too early or too many times. Doing an ultrasound too early may cause the fragile, newly formed embryo to be shaken, which is not conducive to embryonic development. B-ultrasound in early pregnancy is to confirm whether the pregnancy is ongoing and how many days the pregnancy has lasted, to provide a reliable basis for determining the expected date of delivery, and to promptly detect any abnormalities in embryonic development.

2. The second B-ultrasound examination is usually scheduled in the middle of pregnancy (around 20 weeks of pregnancy). At this time, there is relatively more amniotic fluid in the uterus, the fetus is of moderate size, and there is a large space for movement in the uterus. For B-ultrasound examination, there is better contrast, and the various organs of the fetus can be clearly seen. More obvious malformations, such as congenital heart disease, anencephaly, hydrocephalus, spina bifida, abdominal wall defect, short limbs, polycystic kidney disease, and gastrointestinal atresia are easy to detect. If necessary, timely treatment or termination of pregnancy can be carried out.

3. The third B-ultrasound examination should be arranged in the late pregnancy (around 28 weeks of pregnancy), mainly to understand the development of the fetus in the uterus and to check again whether the fetus has any malformations. Because some diseases may not be discovered in time during the second trimester of pregnancy by ultrasound examination.