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Questions and Answers
What is the frequency range of ultrasound waves?
What is the frequency range of ultrasound waves?
- Above 50,000 Hz (correct)
- Less than 20 Hz
- 20,000 to 50,000 Hz
- 16 to 20,000 Hz
Which term refers to the decrease in ultrasound intensity as it travels through tissue?
Which term refers to the decrease in ultrasound intensity as it travels through tissue?
- Attenuation (correct)
- Microstreaming
- Cavitation
- Acoustic streaming
What is the depth at which therapeutic ultrasound maximizes energy absorption in soft tissue?
What is the depth at which therapeutic ultrasound maximizes energy absorption in soft tissue?
- 1-2 cm
- 5-8 cm
- 10-12 cm
- 3-6 cm (correct)
Which type of effect of ultrasound involves altering cell membrane permeability?
Which type of effect of ultrasound involves altering cell membrane permeability?
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What is the term for the steady, circular flow of cellular fluids induced by ultrasound?
What is the term for the steady, circular flow of cellular fluids induced by ultrasound?
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What is microstreaming associated with?
What is microstreaming associated with?
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During which phase of an ultrasound wave do bubbles present in the tissue expand?
During which phase of an ultrasound wave do bubbles present in the tissue expand?
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What happens during cavitation induced by ultrasound?
What happens during cavitation induced by ultrasound?
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