Ultrasound History Overview
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Questions and Answers

What is the main idea behind ultrasound?

  • Detecting brain tumors with sound waves
  • Creating positive and negative pressure changes in tissues
  • Using longitudinal motion to visualize internal organs
  • Sending waves into the body to create images (correct)

    • In which decade was real-time imaging in sonography first introduced?

  • 1950s
  • 1940s
  • 1960s (correct)
  • 1970s

    • What is the frequency range of audible sound for most humans?

  • (20 Hz - 20 kHz) (correct)
  • (5 Hz - 30 kHz)
  • (25 Hz - 25 kHz)
  • (15 Hz - 40 kHz)

    • What is the frequency range typically used in diagnostic ultrasound?

    <p>(2 MHz - 20 MHz)</p> Signup and view all the answers

    How is the propagation speed of an acoustic wave determined in a specific medium?

    <p>By the stiffness of the medium</p> Signup and view all the answers

    What is SONAR primarily used for?

    <p>Locating submarines underwater</p> Signup and view all the answers

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