Four-dimensional color Doppler ultrasound is a folk rumor that boys and girls face outward: when four-dimensional color Doppler ultrasound is used, the fetal face is a boy and the face is a girl.
Scientific explanation:
The orientation of fetal face has nothing to do with the sex of the fetus. The face orientation of the fetus is determined by the implantation of the fertilized egg, and it will constantly change with the fetal movement during pregnancy, so there is no scientific basis for looking at the sex of the fetus through the face orientation of the fetus.
What determines the sex of the fetus:
The sex of the fetus is determined by male sperm. People have 23 pairs of chromosomes, one of which is a sex chromosome, xx is a girl and xy is a boy, while female eggs only contain two X chromosomes, and male sperm contains X and Y chromosomes, so the sex of the fetus is determined by the Y chromosome in male sperm.
Four-dimensional color Doppler ultrasound can find out whether the fetus is deformed or not, and can also find out the femur length, biparietal diameter and other development of the fetus. The method of looking at the sex of the fetus through the femur length and biparietal diameter of the fetus has been circulated among the people.
Ways to look at gender:
Subtract the length of the femur from the biparietal diameter, and if the data is greater than 2 1mm, it is a son, and vice versa. The reason is that boys have big heads and short legs, and girls have long legs and small heads.
Explanation: There is no scientific basis for this statement, because the biparietal diameter and femur length are only an indicator of fetal development, and the sex of the fetus cannot be seen, so pregnant mothers can only be regarded as entertainment and entertainment, and cannot be taken seriously. But expectant mothers can calculate the weight of the fetus through the biparietal diameter.
Four-dimensional color Doppler data to see the gender The following are some color Doppler data and the corresponding fetal gender, which can be used for parents-to-be to entertain, but don't take it too seriously. After all, it is unscientific to see the fetal gender from color Doppler data.
(w stands for week, which is the first letter of English week; D stands for days, which is the first letter of day)
B-ultrasound data of 1, 7W+ 1D: gestational sac 2.9 1.9, a boy baby.
2. 9W+4D B-ultrasound data: 46.630.2mm gestational sac in uterus? Twins are both girls.
3. 60-day B-ultrasound data: gestational sac size is 3.6 1.6mm, and it is a male baby.
4. Ultrasonic data of 5W+6D: gestational sac size is 25mm 1 1mm, and it is a male baby.
6, 46 days B-ultrasound data: gestational sac 20mm× 17mm× 17mm, a female baby.
7. Results of B-ultrasound at 7w+ 1D: The gestational sac was 3220mm, and it was a female baby.
B-ultrasound data of more than 8 and 7 weeks: 3.82.3cm gestational sac was found in the uterus, and it was a male baby.
More than 9 or 8 weeks old, it was a B-ultrasound. The gestational sac was 19mm 10mm, and it was a boy.
10, 4 128mm at 8 weeks, and gave birth to a female baby.
1 1, 62-day B-ultrasound data: 2.6 1.8 gestational sac was found in the uterus, and it was a male baby.
12, 50 days of B-ultrasound data: gestational sac 35mm27mm is a female baby.
13, gestational sac size: 35mm×34mm×28mm, it is a female baby.
14, gestational sac size: 18mm × 16mm × 8mm, it is a female baby.
15, gestational sac length is 4420mm, it is a male baby.
Note: Four-dimensional color Doppler ultrasound can see the sex of the fetus because the reproductive organs of the fetus are directly observed with instruments. According to the single data of color Doppler ultrasound, we can only judge the development of the fetus and whether there is abnormality, but can't judge the sex of the fetus.
There are rumors that if the difference between the length and width of the gestational sac size is more than double, then the male baby is more likely. If the length and width are equal, or there is not much difference, it is likely to be a female baby.
Explanation: There is no scientific basis for this, because the size of gestational sac measured by B-ultrasound is mainly used to estimate the gestational age, and the defects in fetal development can be detected in time according to the change of data.
2, the shape of the gestational sac to see the sex of the fetus Some people think that the shape of the gestational sac can tell whether the fetus is male or female. Generally speaking, if the gestational sac is shaped like eggplant, or it is long, it is more likely to be pregnant with a male baby; And if the gestational sac is oval or round, it is likely to be a female baby.
Explanation: The shape of gestational sac is determined by its tension and amniotic fluid content, and it will change itself during pregnancy. In addition, the position of implantation is different, and the shape of gestational sac is different from the direction and angle of B-ultrasound probe. Therefore, there is no scientific basis to see the sex of the fetus through the shape of the gestational sac.
Is the four-dimensional photo similar to the birth? The four-dimensional color ultrasound photo is very similar to the baby after birth.
Reason:
The time to do four-dimensional color Doppler ultrasound during pregnancy is generally 24-28 weeks. At this time, the outline of fetal facial organs has been basically developed, and four-dimensional color Doppler ultrasound is a very high-definition color stereoscopic imaging, which can clearly see fetal facial organs. Therefore, four-dimensional color Doppler ultrasound will be very similar to the baby after birth.
What is four-dimensional color Doppler ultrasound? Four-dimensional color Doppler ultrasound is a kind of ultrasound examination, which adds time dimension parameters to the three-dimensional color Doppler image to help pregnant women observe the real-time dynamic moving images of the fetus. It is the most advanced ultrasound detection equipment in the world at present.
Four-dimensional color Doppler ultrasound can help pregnant women to observe the development of the fetus in the abdomen in real time. It can stereoscopically image the fetal head and face, clearly display the state of eyes, nose, mouth and mandible, assist doctors to directly diagnose fetal congenital malformations, including surface malformations, visceral malformations and head and face malformations, and determine the precise position of the fetus in the uterus.