Ultrasonography is a medical imaging method that uses ultrasound to create images of organs and other internal anatomical structures.
Ultrasound is high-frequency sounds waves (over 20,000 Hz) that are modified when they hit obstacles in their path. Depending on the density of the environment through which they travel, they return a more or less intense “echo”. The ultrasound device then interprets these signals in the form of images displayed in real time.