The purpose of the anomaly scan is a detailed assessment of the anatomy of your baby in order to determine the presence of congenital defects such as spina bifida, heart or brain abnormalities. The morphology scan includes assessment of fetal anatomy and growth, position of the placenta, and amount of amniotic fluid. Due to the development of the baby’s brain, and the size and complexity of the baby’s heart, 20 weeks onwards is the optimum gestation to perform the routine anomaly scan. However, most of the major abnormalities are visible from 16 weeks and therefore an early anomaly scan at 16-18 weeks may be recommended on special occasions or simply for reassurance. Wellbeing Scan, Growth and Doppler Scan at 24-40 weeks
This scan includes the measurement of the size of the fetal head, abdomen and thigh bone and calculation of an estimate of fetal weight as well as the position and maturity of the placenta, the amount of amniotic fluid, the movements of your baby and the blood flow from the placenta towards your baby. The estimated fetal weight gives an indication to the size your baby will be at birth and also could identify too small or too large babies for that gestational age. The proposed timings for growth scans are at 28, 32 and 36 weeks, however, they may vary depending on the fetal growth velocity and the presence of pregnancy complications such as high blood pressure or diabetes.