ultrasound

Ultrasonic sound.

The use of ultrasonic waves for diagnostic or therapeutic purposes, specifically to image an internal body structure, monitor a developing fetus, or generate localized deep heat to the tissues.

An image produced by ultrasound.

sound with a frequency greater than the upper limit of human hearing; approximately 20 kilohertz

The use of ultrasonic waves for diagnostic or therapeutic purposes

using the reflections of high-frequency sound waves to construct an image of a body organ (a sonogram); commonly used to observe fetal growth or study bodily organs

very high frequency sound; used in ultrasonography