Congenital Anomalies In 3d/4d Scan

3D scans show still pictures of your baby in three dimensions. 4D scans show moving 3D images of your baby, with time being the fourth dimension. It's natural to be really excited by the prospect of your first scan. But some mums find the standard 2D scans disappointing when all they see is a grey, blurry outline. This is because the scan sees right through your baby, so the photos show her internal organs. With 3D and 4D scans, you see your baby's skin rather than her insides. You may see the shape of your baby's mouth and nose, or be able to spot her yawning or sticking her tongue out.
An anomaly scan, also known as a mid-pregnancy scan, takes a close look at your baby and your womb (uterus). The person carrying out the scan (sonographer) will check that your baby is developing normally, and look at where the placenta is lying. Although the anomaly scan is often called a 20-week scan, you may have it any time between 18 weeks and 20 weeks plus six days.