Ultrasound

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  • Created by: Char
  • Created on: 20-05-13 16:55
What frequencies can the human ear detect sound waves of?
20Hz - 20,000Hz
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What are sound waves of a higher frequency called?
Ultrasound waves
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What can be used to produce ultrasound waves?
Electronic systems
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Where is the boundary that the wave meets?
Between two different materials
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What happens to part of the wave?
It is reflected
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The wave then travels back through the....
Material
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To a what?
Detector
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How do you calculate how far away a boundary is?
The time it takes to reach the detector
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What are the results normally processed by, to give an image?
A computer
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What is the equation to work out the distance travelled by an ultrasound pulse?
s=v*t
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What is 's'?
The distance travelled - m
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What is 'v'?
Speed of the ultrasound wave - m/s
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What is 't'?
Time taken - s
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Why can ultrasound be used in medicine for scanning?
It is non-ionising
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So it is safer than?
X-rays
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What's an example of what it can be used for?
Scanning soft tissue such as the eye
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How is ultrasound used in theropy?
To shatter kidney stones in small pieces
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Other cards in this set

Card 2

Front

What are sound waves of a higher frequency called?

Back

Ultrasound waves

Card 3

Front

What can be used to produce ultrasound waves?

Back

Preview of the front of card 3

Card 4

Front

Where is the boundary that the wave meets?

Back

Preview of the front of card 4

Card 5

Front

What happens to part of the wave?

Back

Preview of the front of card 5
View more cards

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