Ultrasound velocity: a. Is equal to the ultrasound frequency divided

1.	Ultrasound velocity: a. Is equal to the ultrasound frequency divided by the wavelength b. Increases with frequency in a given medium c. Is proportional to the square root of the material density d. Is higher in compressible materials e. Is lower in tissues with a higher fat or water content
Answer» a. False. It is a product of the frequency and wavelength. b. False. Velocity in a given medium is virtually independent of the frequency. With velocity being constant, an increase in the frequency causes a proportional decrease in wavelength. c. False. It is inversely proportional to the square root of the material density. d. False. Ultrasound travels faster in stiff, non-compressible media. e. True. The velocity of ultrasound in fat and water is lower than in an average soft tissue.

Ultrasound velocity: a. Is equal to the ultrasound frequency divided by the wavelength b. Increases with frequency in a given medium c. Is proportional to the square root of the material density d. Is higher in compressible materials e. Is lower in tissues with a higher fat or water content

Answer»

a. False. It is a product of the frequency and wavelength.

b. False. Velocity in a given medium is virtually independent of the frequency. With velocity being constant, an increase in the frequency causes a proportional decrease in wavelength.

c. False. It is inversely proportional to the square root of the material density.

d. False. Ultrasound travels faster in stiff, non-compressible media.

e. True. The velocity of ultrasound in fat and water is lower than in an average soft tissue.

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