It is noted that they are all still images. In contrast, a 3D ultrasound machine has a probe that controls multiple 2-dimensional images in different planes in order to create images with a depth dimension, which will be processed by a computer system to render life-like 3-dimensional images. In the present days, a well developed ultrasound machine can produce high-resolution images that can be displayed consecutively in accordance with the motion of the probe (hence, a moving picture).

A thin cross-sectional image obtained by 2D ultrasound scanning represents the signal of sound waves sent out from a probe. Providing a high level of safety, ultrasound is generally used to create images of an internal body structure in two dimensions (with height and width). Ultrasound is high-frequency sound waves, which are not radiation. The Definitions of 3D Ultrasound and 4D Ultrasound Besides, it helps the obstetrician evaluate and take care of twins as well as follow up the treatment of certain fetal abnormalities.īenefiting from advanced technologies, 3D and 4D ultrasound scans are applied in examining the condition of the fetus, in conjunction with 2D ultrasound.

A technique used to visualize a fetus in its mother’s womb, ultrasound provides an obstetrician with valuable details, including determining the stage of pregnancy, the level of development of the fetus, and the presence of birth defects and disabilities. Nowadays, ultrasound plays an important role as a worldwide recognized means to achieve medical healthcare for mothers-to-be and their babies. Expectant mothers may be anxious about the presence of birth defects and the health condition of their unborn babies.

18 week ultrasound 4d