(ŭl-tră-sŏn-ŏg′ră-fē)
[Pronunciation]

The use of ultrasound to produce an image or photograph of an organ or tissue.
Ultrasonic echoes are recorded as they return from reflecting or refracting tissues of different densities.

Subentries:
arterial duplex ultrasonography
Doppler ultrasonography
gray-scale ultrasonography
pelvic ultrasonography
transvaginal ultrasonography