Ultrasound

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What frequency range of sound waves can the human ear hear?
20Hz to 20 000Hz
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What are Ultrasound waves used for?
Prenatal scans of a baby in the womb.
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What happens to Ultrasound waves after a transducer has emitted pulses?
It is partially reflected from the different tissue boundaries in its path and returns to the transducer to create an image on a screen.
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What is an advantage of using Ultrasound waves instead of X-rays for medical scanning?
Ultrasound waves are non-ionising and therefore harmless when used for scanning.
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What can Ultrasound therapy be used for?
To break painful kidney stones into little bits so the fragments are small enough to leave the kidneys naturally.
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Why are Ultrasound waves not useful for examining lungs?
Because they do not travel in air.
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What, other than medical uses, do Ultrasound waves have?
Detecting oil on the sea bed.
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Why do Ultrasound scans reacquire gel?
To ensure that there is no air between the ultrasound transducer and the patients skin.
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Other cards in this set

Card 2

Front

What are Ultrasound waves used for?

Back

Prenatal scans of a baby in the womb.

Card 3

Front

What happens to Ultrasound waves after a transducer has emitted pulses?

Back

Preview of the front of card 3

Card 4

Front

What is an advantage of using Ultrasound waves instead of X-rays for medical scanning?

Back

Preview of the front of card 4

Card 5

Front

What can Ultrasound therapy be used for?

Back

Preview of the front of card 5
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