Ultrasound Properties and Frequencies Quiz
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Questions and Answers

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?

  • Attenuation (correct)
  • Microstreaming
  • Cavitation
  • Acoustic streaming
  • 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?

    <p>Nonthermal effects</p> Signup and view all the answers

    What is the term for the steady, circular flow of cellular fluids induced by ultrasound?

    <p>Acoustic streaming</p> Signup and view all the answers

    What is microstreaming associated with?

    <p>Gas bubbles</p> Signup and view all the answers

    During which phase of an ultrasound wave do bubbles present in the tissue expand?

    <p>Rarefaction phase</p> Signup and view all the answers

    What happens during cavitation induced by ultrasound?

    <p>Pulsation of gas-filled bubbles</p> Signup and view all the answers

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