2D/3D/4D & HD – What Is The Difference?

2D ultrasounds are the traditional “black and white” images typically seen and represent a flat cross section of your baby. These images allow you to see through the baby and their organs and skeletal system can be visualized. This is very useful for obtaining growth measurement, heart rate and detecting abnormalities.

3D ultrasound uses multiple 2D image slices to create the “surface” of the baby this is the third dimension. This allows you see the baby from the outer skin surface instead of bones.

When the 3D image is combined with time (fourth dimension) this will show live 4D movement of the baby and allows you to view the baby in real life motion as they are occurring in the womb. Facial expressions such as a yawn or sucking the thumb or toe can be seen.

High Definition (HD) is the latest technology in rendering surface and is unlike anything you ever seen. Compared to the monochrome surface of the 3D images, HD images show real skin tone life like baby images with no additional cost.


10-October-17 Anna Nguyen

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