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Question 32.20: Figure 32.33 shows how the amplitude of RF waves coming from...

Figure 32.33 shows how the amplitude of RF waves coming from watery tissue varies after resonance. Copy the graph and add lines and labels to show the graphs you would expect to see for cancerous and fatty tissues.

32.33
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32.20

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Question: 32.WE.2

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Question: 32.7

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Question: 32.2

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Question: 32.WE.1

The attenuation (absorption) coefficient of bone is 600 m^−1 for X-rays of energy 20 keV. A beam of such X-rays has an intensity of 20 Wm^−2. Calculate the intensity of the beam after passing through a 4.0 mm thickness of bone ...

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Question: 32.21

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Question: 32.19

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Question: 32.17

Two consecutive peaks in an ultrasound A-scan are separated by a time interval of 0.034 ms. Calculate the distance between the two reflecting surfaces. (Assume that the speed of sound in the tissue between the two surfaces is 1540 m s^−1.) ...

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Question: 32.WE.3

In a particular A-scan, similar to Figure 32.26, the time interval between pulses 1 and 2 is 12 µs. The speed of ultrasound in bone is about 4000 m s^−1. Determine the thickness of the bone. ...

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