Does a 4D ultrasound help you bond with your baby?

What the research found

First, the terms. 3D is the still picture. 4D is the same picture in motion.

A 2013 study and review in the journal Prenatal Diagnosis, by de Jong-Pleij and colleagues, looked at 160 women. Each had either a 3D/4D scan or a 2D scan in the third trimester. The researchers measured how attached each woman felt to her baby. Scores rose after the scan in both groups, with no difference between the groups. Within the 3D/4D group, the effect was stronger when the baby could be seen and recognized clearly. The authors also reviewed 13 earlier studies. Eight looked at bonding, and they found no difference between 3D/4D and 2D.

A 2005 study by Ji and colleagues compared 100 mothers. Half had 2D scans only, and half had 2D and 3D. The mothers who also had 3D:

• Showed their pictures to more people: a median of 27.5, versus 11.
• More often said they could form a mental picture of their baby: 82% versus 39%.
• More often felt they “knew” their baby right after birth: 70% versus 56%.

The American Institute of Ultrasound in Medicine says “there is only some scientific evidence that 3D sonography has a positive impact on parental-fetal bonding.” The same statement discourages ultrasound without a medical reason, and that includes keepsake sessions like ours. Our safety page explains how we think about that.

What that adds up to

Put together, the evidence that 3D/4D bonds you more than an ordinary 2D scan is thin. What 3D seems to add is a picture that’s easier to hold in your mind and more likely to get shown around.

So we won’t promise you a closer family. We’ll tell you what a 4D session is: usually 10 to 15 minutes of watching your baby move on a big screen, with your people in the room. It’s an elective keepsake ultrasound, not a medical exam. We don’t diagnose, and health questions go to your doctor or midwife.

What you see depends on the week.

From 16 to 24 weeks, the whole baby fits in one frame. From 28 to 34 weeks, you get close-ups of the face and hands. Babies don’t take direction. Some hide behind a hand or turn away, and we can’t promise a perfect picture. When a session is particularly difficult, we take extra time, and we bring you back for another try. See when to come, or read about 4D sessions.

Who to bring, and what you take home

Bring your partner, the grandparents, the big brother or sister. Everyone watches on the big screen. A 4D session includes 100+ color images on a USB drive, 12 color prints and 8 black-and-white prints.

Ways to connect that need no equipment

Parents also talk to the bump, sing to it and read aloud. We’re not offering these as proven methods. They’re things parents do. They’re free, they need no appointment, and nobody grades the singing.