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Medical Term:


Pronunciation: ul'tra-so-nog'ra-fe


The location, measurement, or delineation of deep structures by measuring the reflection or transmission of high frequency or ultrasonic waves. Computer calculation of the distance to the sound-reflecting or absorbing surface plus the known orientation of the sound beam gives a two-dimensional image.

Synonym(s): echography, sonography

[ultra- + L. sonus, sound, + G. grapho, to write]

See Also: ultrasound

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.