3D - 2

What is the 4th dimension in a 4d ultrasound?

I see a lot of people asking about 4d ultrasounds and I want to know what the other dimension is.

Public Comments

1. It's video I believe
2. movement
3. its explained at this site http://www.4d-ultrasounds.com/ hope that helps
4. What exactly is a 3D or 4D ultrasound? A 3D ultrasound is performed using the exact same machine as a 2D ultrasound. The difference is a 2D ultrasound visualizes the baby in planes (or layers) and a 3D ultrasound looks at the surface of the baby. The term 4D simply means the element of motion has been added to a still 3D photo. 4D is also referred to as “3D Live”.