Patient's question:
Doctor, I've only been pregnant for a month, and I've just had one prenatal check-up. When is the small anatomic survey usually done during pregnancy?Doctor's answer:
Prenatal small aneuploidy screening can be performed between 11-13 weeks plus 6 days of pregnancy for NT detailed examination. Through color ultrasound examination of the translucent membrane of the fetus's neck, the thickness of the translucent membrane is used to preliminarily determine if the fetus has chromosomal abnormalities. If the translucent membrane of the fetus's neck is within the normal range, mid-trimester Down syndrome screening can be performed. Abnormalities in the translucent membrane require further examination and diagnosis.