Ultrasound Imaging and Medical Equipment Quiz
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Questions and Answers

Which medical imaging technique involves the use of Doppler to measure speed and direction of blood flow?

  • Ultrasound (correct)
  • Pulse oximeters
  • Electrocardiographs
  • Vein viewer
  • What type of gap allows the ultrasound beam to pass through, for instance between ribs?

  • Density gap
  • Air gap
  • Tissue gap
  • Acoustic window (correct)
  • Which medical device uses the absorption of infrared light by hemoglobin in the blood to visualize veins?

  • Pulse oximeters
  • Electrocardiographs
  • Ultrasound
  • Vein viewer (correct)
  • How is the refraction and reflection of sound reduced during ultrasound imaging?

    <p>By applying a water-based gel between the probe and the skin</p> Signup and view all the answers

    For what purpose can ultrasound imaging be used?

    <p>To aid placement of invasive devices and for soft-tissue imaging</p> Signup and view all the answers

    What happens when the device is held above the skin during vein visualization using a vein viewer?

    <p>Veins appear noticeably different than the surrounding tissues</p> Signup and view all the answers

    Who would benefit from the use of a vein viewer according to the text?

    <p>Obese patients</p> Signup and view all the answers

    What is the primary purpose of the vein viewer?

    <p>To map veins for phlebotomy</p> Signup and view all the answers

    What physical laws does the pulse oximeter rely on?

    <p>Beer's law and Lambert's law</p> Signup and view all the answers

    What does the pulse oximeter measure according to the information provided?

    <p>Pulsatile oxygen saturation</p> Signup and view all the answers

    What is the purpose of continuous ECG monitoring?

    <p>To provide information about heart rate and rhythm</p> Signup and view all the answers

    How many electrodes are required for a 12-lead ECG?

    <p>10 electrodes</p> Signup and view all the answers

    What is the purpose of the electrodes used in an ECG?

    <p>To detect small electrical changes at the skin surface caused by the heart</p> Signup and view all the answers

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