Anencephaly is the most serious problem of developmental defects in fetal brain tissue after pregnancy, which can cause great harm to the fetus's brain and be a fatal blow to the family. Therefore, in order to avoid this situation, it is necessary to actively undergo prenatal checkups. So, do you want to know if prenatal screening can detect anencephaly?
Large scale screening can certainly detect anencephaly, and detailed imaging of the fetus's brain, cerebellum, heart, and other parts will be taken. Generally, B-ultrasound can detect fetal anencephaly at 3 months of pregnancy. If it is other abnormalities in the fetus's internal organs, it can only be detected in mid pregnancy.
In order to better eliminate the health problem of fetal anencephaly, doctors generally recommend that pregnant women complete a major screening test within 20-24 weeks, and the latest should not exceed 28 weeks. A major screening test can effectively detect abnormalities in the fetus's brain, organs, facial features, limbs, and spine.
The accuracy of prenatal screening depends on the size of the fetal abnormality. If the abnormality changes significantly, the probability of detection is relatively high. If the abnormality changes slightly, the probability of detection is relatively low. However, if it is an anencephaly, the abnormality will be more obvious, so the probability of detection will be higher.
