4D Scan

3-D scans are still colour pictures of your baby in three dimensions, like the photos you sometimes see in newspapers and magazines. 4-D scans (with time as the fourth dimension) are moving 3-D images of your baby.

With 3-D and 4-D scans, you see your baby's skin covering the internal organs. You're able to see the shape of your baby's mouth and nose,. They can be useful in giving additional information about a known abnormality. Because these scans can show more detail from different angles, they can help in the diagnosis of problems like cleft lip. This can help doctors plan the repair after birth. 3-D scanning can also be useful to look at the heart and other internal organs.

These scans are just as safe as a normal scan, because the image is made up of sections of two dimensional images converted into a picture. No harmful effects have been demonstrated.

4D scan at 23 weeks
The best time to have a 3-D or 4-D scan is between 23-28- weeks. . After 32 weeks his head may go deep down in your pelvis, so you might not be able to see the face.