Is the gestational sac data accurate in predicting the gender of a baby?

Although it has always been advocated that boys and girls are treated equally, fetal testing has long been strictly prohibited in our country. However, pregnant mothers are always curious about the baby in their belly and like to infer the baby's gender through various methods. It is said that B-ultrasound data can tell whether the baby is a boy or a girl, and the gestational sac is also an important data in B-ultrasound. So, how accurate is the gestational sac in determining the gender of a baby?

No matter which method is used to predict the gender of the fetus, there is a 50% accuracy rate. However, there is currently no medical confirmation to determine the gender of the baby based on the gestational sac. The following is only for the entertainment of pregnant mothers! Some people think that it should be looked at this way. First of all, the data cannot exceed 8 weeks, 40 days is the best, and then there must be 3 data. Without 3 data, it cannot be distinguished at all. The gestational sac is cylindrical. Every B-ultrasound technician will take the cross-section in a different direction when doing B-ultrasound. Some take cross-sections, and some take vertical cross-sections. Therefore, you cannot distinguish the gender by looking at whether the picture is long or round.

For example, the gestational sac is 40*2b250m. There is no way to distinguish it at all. On the surface, the two numbers are half the distance, so it should be a boy. But no, because there is no third number. If it is 40*40*20, it is definitely a boy. But if the ultrasound technician does a cross-section, the gestational sac becomes two numbers of 40*4b250m, which looks round. Then it is concluded that the gestational sac is round, but how can a child be born? It seems like an illegal fraud. Therefore, there must be 3 pieces of data. If the gestational sac is an arithmetic progression, such as 40*30*20, then it is a girl. However, if the ultrasound technician takes a 40*20 cross-section, it looks like a boy's data, but a girl grows out, leading to the saying that the gestational sac cannot be used to determine the gender of the baby.

In addition, it is impossible to distinguish if there are only two data, because each B-ultrasound technician obtains the direction of the gestational sac differently, so it is impossible to distinguish. It is easiest to distinguish if there are three data. If two data are similar and the third data is half smaller than the first two, then it is definitely a baby. If the data is a descending data, it is a girl. Some data have a larger value that is not at the front. It's okay. Arrange the three data from large to small and try it yourself, for example: 40*25*39, or 39*25*40, etc. These are all children.