Fetal crown-hip diameter standard for males and females

After a woman becomes pregnant, many families are very eager to know whether the fetus is a boy or a girl. Therefore, there are many popular methods for determining the gender of the fetus, such as Down syndrome screening to determine the gender and judging the gender from the biparietal diameter, but these are all rumors and cannot determine the gender of the fetus. So, can the crown-to-rump diameter standard of NT fetuses distinguish between boys and girls?

The NT standard for crown-rump diameter of a fetus cannot be used to determine the sex of the fetus. Nowadays, there are many methods of identifying the sex of the fetus without distinguishing it, but they are basically rumors. If you want to know the gender of the fetus, you can only make an accurate judgment through B-ultrasound examination and amniocentesis. All other methods are inaccurate and as unreliable as "sour boy, spicy girl".

The NT fetal crown-to-rump diameter is used to estimate the gestational age in the early stages of pregnancy. Generally, it is most accurate to measure it during the 7th to 12th week of pregnancy. This is because before 7 weeks of pregnancy, the fetus is still very small, but after 12 weeks, the fetus is usually curled up and cannot be accurately distinguished.

NT test is an important test for women after pregnancy. It is an effective way to check whether the fetus is abnormal in the early stage. Through the NT examination, it can be determined whether the fetus is anencephalic, and whether there is any abnormality in the fat behind the neck. If the test shows abnormalities, sex chromosome analysis should be carried out again to prevent the fetus from having IQ problems after birth.

What is the specific effect of the fetal crown-buttock diameter?

When examining the fetus in early pregnancy with color Doppler ultrasound, the crown-rump diameter is often used to estimate the fetus' gestational age, which is a more accurate method of estimation. At the beginning of 6 weeks, the embryo is very small and the measurement is inaccurate. As the pregnancy weeks increase, the embryo grows and its shape curve becomes C-shaped, with the front end relatively large and easy to distinguish. Therefore, the following formula is used to calculate gestational age. The crown-to-rump diameter of the fetus refers to the distance from the top of the skull to the edge of the buttocks, and is usually accurately measured around 7-12 weeks of pregnancy.

Although expectant parents are full of curiosity about the baby's gender, they don't need to worry too much. It is better to adjust their mentality and take things as they come. It is best not to try these unscientific methods of distinguishing between boys and girls, so as to avoid affecting the health and growth of the fetus due to incorrect operation, resulting in disastrous consequences.