How to look at the picture of pregnancy color Doppler ultrasound?

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Many expectant mothers who are anxious to see what the baby is doing want to know what the baby's four-dimensional color Doppler ultrasound is like during pregnancy. Now experts in the Department of women's health care point out that the information of the four-dimensional color Doppler ultrasound images taken in different periods is different. The best time to take the four-dimensional color Doppler ultrasound images in 20-28 weeks is the clearest, most dynamic and most memorable. How to look at the picture of pregnancy color Doppler ultrasound? Let's talk about it

How to look at the picture of pregnancy color Doppler ultrasound?

To see if the contour of single fetal head is complete by four-dimensional color Doppler ultrasound. If the defect or deformation is abnormal, no midline displacement and no hydrocephalus are normal. The measurement of biparietal diameter of fetal head is an index for estimating gestational age and fetal maturity. The average biparietal diameter increased by 0.22 cm per week from 26 to 36 weeks of pregnancy. After 36 weeks of pregnancy, biparietal diameter increased slowly, only 0.1 cm per week. The biparietal diameter of full-term fetuses ranges from 8 to 10 cm. Biparietal diameter can also predict fetal weight. If the biparietal diameter is more than 8.5 cm, the fetal weight will exceed 2500 G. If the biparietal diameter is between 9.1 and 10 cm, the weight of the newborn is between 3276 and 3925 g. if the biparietal diameter is more than 10 cm, the weight of the newborn is more than 4000 G.

The existence of fetal heart rate, strong for normal, weak there are two possibilities, one is that the fetus is sleeping, one is abnormal. The normal fetal heart rate is 120 to 160 beats per minute.

The normal thickness of the placenta should be between 25 and 50 mm. According to the changes of chorion, placental light spot and basement membrane, the maturity of placenta was classified as grade 0, grade I, grade II and grade III. The grading of the placenta indicates the maturity of the placenta. Normal early pregnancy is grade 0, which is the growth stage of placenta. In the second and third trimester of pregnancy, with the maturity of placenta, it develops from grade I to grade III. After 37 weeks of gestation, most of them are grade III placenta. So the placenta is grade III placenta. Therefore, grade III placenta can be used as a reference for fetal maturity.

matters needing attention

Four dimensional ultrasound can only see the health of the fetus, but also can diagnose the disease of the fetus.