4d scan are moving 3d images, which are are still pictures of your baby in three dimensions.
Most moms are disappointed when they see 2d images of their child
because all they see is a grey, blurry outline. This is because the scan
sees right through your baby, so the photos show your baby's internal
organs.
3D 4D Ultrasound are just as safe as 2d scans, because
the image is made up of sections of two-dimensional images converted
into a picture. Furthermore, with 3D and 4D scans, you see your baby's
skin covering her internal organs. You may see the shape of your baby's
mouth and nose, or see her yawn or stick her tongue out.
The best time to have a 3D or 4D scan is when you are between 26 weeks
and 30 weeks pregnant. Before 26 weeks your baby has very little fat
under her skin, so the bones of her face will show through her skin. If
the placenta is at the front of your uterus (anterior), it is best to
wait until 28 weeks to get the best images of your baby.
It's natural for a mother to see your baby's face on the scan. But
sometimes depending on the positing it is not possible. Also,
if the baby is lying facing outwards, with a good pool of amniotic fluid
around the features, you should be able to see his/her face clearly.
But if baby is facing your back, or if there's not much fluid around,
you won't see much. The same applies if the mother has a lot of tummy
fat.
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