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ultrasound

DEFINITIONS OF: ultrasound

1

n 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

Synonyms:
echography, sonography, ultrasonography
Types:
A-scan ultrasonography
the use of ultrasonography to measure the length of the eyeball
B-scan ultrasonography
the use of ultrasonography to view structure in the back of the eye
Type of:
prenatal diagnosis
any of the diagnostic procedures used to determine whether a fetus has a genetic abnormality
imaging, tomography
(medicine) obtaining pictures of the interior of the body

n very high frequency sound; used in ultrasonography

Type of:
sound
mechanical vibrations transmitted by an elastic medium
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