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Chapter: 16.4 / Q: 8
What will a sound of frequency 250,000 Hz be?
Chapter: 16.4 / Q: 9
What is ultrasound least useful for examining?
Chapter: 16.4 / Q: 10
The change in pitch (frequency) of a sound when there is relative motion between the sound source and the human observer is known as the:
Chapter: 16.4 / Q: 11
Basically, what does a Doppler ultrasound examination for peripheral vascular disease involve?
Chapter: 16.4 / Q: 12
A Doppler ultrasound device produces ultrasound of frequency 5 MHz and the echo from red blood cells has a frequency of 5,002,500 Hz. The beat frequency produced will be:
Chapter: 16.4 / Q: 13
When ultrasound strikes the boundary between two different body tissues, the amount of reflection that will occur is proportional to the difference in what?
Chapter: 17 / Q: 1
Which statement about the differences between medical imaging using x-rays and a nuclear medicine scan using gamma rays is correct?
Chapter: 17 / Q: 2
Conventional radiography – such as a chest x-ray (CXR) – differs from computed tomography (CT) in what respect?
Chapter: 17 / Q: 3
Which of the following imaging modalities does NOT involve the use of “ionising radiation”?
Chapter: 17 / Q: 4
When inspecting an x-ray image, the order of densities from blackest to whitest is:
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