The application of ultrasonic waves to therapy or diagnostics, as in deep-heat treatment of a joint or imaging of internal structures.
Ultrasound imaging, also called sonography, is a noninvasive exam that uses high-frequency sound waves to produce moving pictures of the inside of the body. Ultrasound exams are painless, no radiation, dyes or magnets are used and the technology is very safe. For this reason ultrasound exams are frequently used during pregnancy. Because ultrasound images are captured in real-time, they can show the structure and movement of the body's internal organs, as well as blood flowing through the vessels.