Definisjon av ultrasound

Vi fant 6 definisjoner av ultrasound på engelsk.

WordNet

Noun
ultrasound - very high frequency sound; used in ultrasonography
		sound the particular auditory effect produced by a given cause; "the sound of rain on the roof"; "the beautiful sound of music"
ultrasound - 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
		sonography, ultrasonography, echography
		tomography, imaging (medicine) obtaining pictures of the interior of the body
		prenatal diagnosis any of the diagnostic procedures used to determine whether a fetus has a genetic abnormality
		a-scan ultrasonography the use of ultrasonography to measure the length of the eyeball

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Substantiv
ultrasound - sound with a frequency greater than the upper limit of human hearing; approximately 20 kilohertz.
ultrasound - The use of ultrasonic waves for diagnostic or therapeutic purposes.

Ultrasound is cyclic sound pressure with a frequency greater than the upper limit of human hearing. Although this limit varies from person to person, it is approximately 20 kilohertz (20,000 hertz) in healthy, young adults and thus, 20 kHz serves as a useful lower limit in describing ultrasound. The production of ultrasound is used in many different fields, typically to penetrate a medium and measure the reflection signature or supply focused energy.

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