Sarah is getting her first look at the life growing inside her tummy. Right now there are four babies in there with room to grow.

"It's really amazing to actually see all four of them and see where they're positioned and everything, and see their little hands waving," said Sue.

It's a Kodak moment, courtesy of a 3-D ultrasound. Doctors use it to make sure everything is on track for baby's arrival.

Find out more about Dr. Cote. "I think it adds a dimension to the ultrasound," said Dr. Cote.

Parents use it for reassurance.

"There are so many risks and everything with multiple births, that it's such a good feeling to see that they're all jumping around and doing well in there," said Sue.

Because Sue is only 14 weeks along, it's hard to make out all the details. But just look at this 3-D two weeks later.

OB-GYN Dr. John Cote says the 3-D picks up surface problems that sometimes aren't as clear in a standard ultrasound.

"Most 3-D ultrasounds probably, technically are going to be more able to detect facial anomalies, cleft lip, cleft palate. That's probably where they use the most technically," said Dr. Cote.

3-D ultrasounds have become so popular, pregnant women are requesting them. Dr. Cote says they are great in helping moms to bond with their babies. But, you won't see them replace the standard 2-D ultrasound. Doctors learn too much from the black and white images.