3D - 2

what is the difference between 3D and 4D ultrasounds?

2D is the normal ultrasound, 3D is where you see the face and it actually looks human. i just didn't know the difference between 3D and 4D. my doctor does a 3D one, so I'm excited.

Public Comments

1. 4D is 3D but in real time.. ie a 3D picture but with movement.. there is not many clinical medical reasons to have either except for pretty pictures or if there is something like a cleft lip
2. The 4th dimension is time. So it's basically the exact same thing, just a time difference, That's why they're normally reffered to as "3D/4D ultrasounds"
3. http://images.search.yahoo.com/search/images?_adv_prop=image&fr=yfp-t-501-s&va=4d+ultrasound&sz=all
4. ok 3D is a normal ultrasound but a 4D you can see the babys face and all of its features.. its really cool!
5. 2d is a normal ultrasound, actually. 3d is an ultrasound where you can actually see baby's features pretty clearly. 4d is the same as 3d only you can see baby's movements as well.
6. 4D is more detailed and you can see what the baby will look like almost exactly. 3D is the regular grayscale ultrasounds.