3D vs 4D Baby Scan: Your Guide to Seeing Your Baby

Thanks to advances in ultrasound technology, expectant parents now have the option to see their baby in extraordinary detail before birth. Alongside the standard 2D scans, we at MotherScan provide 3D and 4D baby scans. These scans not only add reassurance about your baby’s wellbeing but also create treasured keepsake images.

Here, we answer the most common questions about 3D and 4D scans.

What is a 3D baby scan?

A 3D baby scan is an ultrasound that produces still, three-dimensional images of your baby. Instead of the traditional flat black-and-white pictures from 2D scans, 3D images show depth and detail. Parents often find these scans special because you can begin to see recognisable facial features such as the nose, lips, or chin.

What is a 4D baby scan?

A 4D scan is essentially a moving 3D scan. It captures live video of your baby in the womb, adding the fourth dimension: time. This allows you to watch your baby yawn, stretch, or suck their thumb in real-time. Many parents describe this as a magical bonding moment.

When is the best time to have a 3D/4D scan?

The ideal window is usually between 24 and 30 weeks of pregnancy. At this stage:

• The baby has developed distinct features.
• There is still enough amniotic fluid to allow clear imaging.
• The baby is large enough for details but not yet too cramped.

Earlier scans may not show fully formed features, while later scans can be limited by the baby’s position or reduced fluid around them.

How long does a 3D/4D scan take?

A typical 3D or 4D scan lasts 20-30 minutes. This gives enough time for our sonographer to capture images and video while ensuring your comfort. If the baby is in a tricky position, you may be asked to move around, have a cold drink, or take a short break to encourage better views.

Are 3D/4D baby scans safe?

Yes, they are. Both 3D and 4D scans use the same type of ultrasound as 2D scans, which has been used safely in pregnancy for decades. According to the NHS and NICE, there is no evidence that ultrasound is harmful to either mother or baby when performed appropriately by trained professionals.

Can a 3D/4D scan confirm gender?

Yes, it can. Although gender is usually confirmed most clearly with a 2D scan, a 3D or 4D scan may also show the baby’s sex if the position is favourable. At MotherScan, our sonographers will use whichever mode gives the clearest and most reliable view.

Can I bring family or friends to my scan?

Absolutely. We understand that these moments are important to share. At MotherScan, you are welcome to bring your partner, family members, or close friends. Our scan rooms are comfortable, and we encourage families to be part of the experience.

Final Reassurance

3D and 4D scans are not essential for pregnancy care, but they are a wonderful way to connect with your baby before birth. Whether you simply want extra reassurance or a memorable keepsake to share with family, these scans provide a safe and special experience. At MotherScan, we are here to make every step of the journey comfortable, supportive, and unforgettable.