Should you opt for the 4D ultrasound? That depends on how intimate you want to get with your unborn fetus. If you are wondering what the differences are, here are some videos to explain…
First some definitions:
Traditional ultrasound scanning is 2D, meaning it sends and receives ultrasound waves in just one plane. The reflected waves then provide a flat, black-and-white image of the fetus through that plane. Moving the transducer enables numerous planes of viewing, and when the right plane is achieved, as judged by the image on the monitor, a still film can be developed from the recording. Most of the detailed evaluation of fetal anatomy and morphology so far has been done using 2D ultrasound.
Further development of ultrasound technology led to the acquisition of volume data, i.e., slightly differing 2D images caused by reflected waves which are at slightly different angles to each other. These are then integrated by high-speed computing software. This provides a 3-dimensional image. The technology behind 3D ultrasound thus has to deal with image volume data acquisition, volume data analysis and finally volume display.
4D ultrasound has the same advantages as 3D, while also allowing us to study the motion of various moving organs of the body. Its clinical applications are still being studied. ~NewsMedical, Keep Reading Here
- 3D refers to still pictures
- 4D is live time
Now, let’s look at some visual differences:
Curious what baby’s ultrasound will look like Week by Week?