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Definition of Ultrasound/Ultrasonography

Ultrasound/Ultrasonography: A test in which high-frequency sound waves (ultrasound) are bounced off tissues and the echoes are converted into a picture (sonogram).

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=5897
Last Editorial Review: 6/14/2012

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