Sonography is an imaging procedure in which ultrasound waves are used to examine organic tissue. Sonography is very popular, not only because of its low cost, but also because the use of ultrasound is quite risk-free with the right dosage.
This is primarily due to the fact that the sound waves emitted by the ultrasound device are of relatively low energy. Therefore, in contrast to X-Rays, the patients are not exposed to any radiation, and during the ultrasound examination they only feel a slight warming of the examined body part. 3D sonography uses 2D images and generates parallel layer images and assembles them.
With 4D ultrasound, the 3D image blocks are processed very quickly one after the other, so that three or more images per second can be displayed. For example, the child's movements, heartbeat and blood flow can be displayed in real time. In principle, ultrasound examinations are carried out in the preventive examinations of pregnant women, neurology, neurosurgery and the examination of the heart or abdomen.