Q: Why might I need or want extra scans?
A:
Extra scans will be recommended if the doctor or the midwife thinks the baby seems to be small. Most small babies are healthy small babies, but with some there may be a problem with the placenta, or they may not be getting enough nutrition or oxygen. The baby is measured on the scan and its birth weight is estimated. Measurements will also be taken of the head (BPD or bi-parietal diameter; OFD or occipito frontal diameter; and HC or head circumference), the leg length (FL or femur length), and the diameter and circumference of the abdomen (AC or abdominal circumference). If normal fetal movements, normal fetal blood flow and a normal volume of amniotic fluid are seen on the scan, this is very reassuring. If the baby seems to be small, additional tests are carried out. Click here for more information on ultrasound scan services at The Birth Company.
Some women will have an extra scan at about 17 weeks to confirm the sex of the baby.
Women will also have extra scans purely for reassurance if they are anxious.
