[Weeks 20-23] Anatomy scan: when even the doctors keep their eyes wide open
While earlier ultrasound examinations may have focused mainly on your baby’s growth, estimated fetal weight, and amniotic fluid, the detailed anatomy ultrasound (anatomy scan) performed in the second trimester takes a closer look at your baby’s major organs and body structures. However, even a detailed ultrasound cannot detect every congenital abnormality. Some subtle abnormalities may be difficult to identify depending on the baby’s position and size, gestational age, and imaging conditions. The main purpose of the anatomy scan is not to find every tiny abnormality, but to check whether the baby’s brain, face, heart, spine, abdominal organs, arms and legs, and other major structures are developing as expected. Depending on the mother’s condition, the ultrasound may also identify findings such as uterine fibroids or ovarian cysts. When indicated, cervical length may also be measured to help assess the risk of preterm birth.