Ultrasound is a diagnostic procedure that uses high-frequency sound waves beyond human hearing capability to produce high-quality images of soft tissues and motion within the body. Ultrasound involves no x-ray and can provide medical information that, in the past, may have required surgery.
How does ultrasound work?
The ultrasound procedure is simple and painless. A hand-held transducer emitting silent, high frequency sound waves is placed against the body and slowly passed over the area being examined. The sound waves pass through the skin and into the body. The returning sound waves or echoes are separated and identified by the transducer, then changed into electrical energy. Sophisticated equipment produces images on a video monitor and then on paper or film.