An NT value of 0.7mm is normal. NT is a very important test during pregnancy and is performed during the 11-13+6 weeks of pregnancy. The specific measurement is a test that measures the thickness of the fetal nuchal translucency by ultrasound to detect any malformations in the fetus. The normal value for this thickness cannot be greater than 3mm. A normal NT value indicates that no chromosomal disorders have been detected in the fetus. Even if the NT value is normal, further screening is needed to rule out the possibility of chromosomal abnormalities in the fetus. If the NT value is greater than 3mm, the possibility of fetal congenital heart disease and neural tube malformation will increase, but within the normal range can not completely rule out the possibility of fetal malformations, should be combined with maternal serological screening for Down’s syndrome, to rule out the possibility of fetal chromosomal abnormalities such as trisomy 18, trisomy 21 and so on. Regularly do your maternity checkups, and go to the hospital in time if there are any abnormalities.