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Understanding the Technology behind 3D and 4D Scans
Tuesday 4th July 2023
The ability to see your developing baby while still inside the womb is an amazing experience for
any parent-to-be. Thanks to advancements in medical technology, 3D and 4D scans have made
it possible. These scans provide clear and highly detailed images of the baby's features,
movements, and activities, which can be used to diagnose any potential problems and monitor
fetal growth.
If you're curious about how these scans work, you've come to the right place. In this article, we'll
explain the technology behind 3D and 4D scans, how they differ from traditional 2D scans, and
what you can expect during the scan procedure.
The Difference Between 2D, 3D, and 4D Scans
Traditional 2D ultrasound scans use high-frequency sound waves to create a two-dimensional
image of the fetus. These scans are still commonly used to check the baby's development,
position, and heartbeat. However, they are limited in terms of detail and depth perception.
3D ultrasound scans, on the other hand, use multiple 2D images taken from different angles and
combine them to create a 3D image of the fetus. This provides a more detailed view of the
baby's features, such as the face, hands, and feet, allowing parents to see the baby's unique characteristics.
4D scans are similar to 3D scans but with one added dimension: time. 4D scans create a
moving 3D image of the fetus, capturing their movements and activities in real time. This
provides parents with a better understanding of their baby's behaviour and can be used to
diagnose any potential problems with fetal movement.
The Technology Behind 3D and 4D Scans
Both 3D and 4D scans use the same technology as 2D scans: high-frequency sound waves.
However, to create a 3D or 4D image, the ultrasound machine needs to take multiple 2D images
from different angles. These images are then processed by a computer to create the final 3D or
4D image.
The ultrasound machine sends out sound waves that bounce off the baby and create echoes.
These echoes are then picked up by the device and used to create a black-and-white 2D image.
To create a 3D or 4D image, the machine takes multiple 2D images at different angles, which
are then combined to create the final image.
During the scan, a specially trained sonographer will apply a warm gel to your stomach and
move a small handheld device called a transducer over your skin. The transducer emits sound
waves and captures the echoes to create the images. You'll be able to see the images on a
screen, and the sonographer will explain what you're seeing.
What Can You Expect During the Scan?
3D and 4D scans are similar to 2D scans in terms of the procedure. You'll be asked to lie down
on an examination table and expose your stomach. The sonographer will apply a warm gel to
your stomach and move the transducer over your skin.
The scan usually takes around 30 minutes to complete. You'll be able to see the images on a
screen, and the sonographer will explain what you're seeing. You can also ask questions and
discuss any concerns you may have.
It's important to note that 3D and 4D scans are not routine scans and are not necessary for the
health and well-being of your baby. These scans are optional and are usually offered as a
private service. Although they provide a detailed view of the baby, they are not a substitute for
medical advice or diagnosis.
In Conclusion
3D and 4D scans provide parents with an amazing opportunity to see their developing baby in
detail before they are born. These scans use high-frequency sound waves and advanced
computer technology to create detailed and realistic images of the fetus.
While 2D scans are still the most common form of ultrasound, 3D and 4D scans provide an
additional level of detail and depth perception, allowing parents to see their baby's unique
features and movements.
If you're considering a 3D or 4D scan, it's crucial to speak to your healthcare provider and
discuss any concerns or questions you may have. Remember, these scans are optional and are
not necessary for the health and well-being of your baby, but they can provide a once-in-a-
lifetime experience for parents-to-be.
For 4D baby scanning, choose Numi Scan. We offer comfortable baby scans and other
ultrasound and obstetrics services to parents in Essex, Hertfordshire & London. Book now!
