Mastering Automatic Exposure Control (AEC) in X-ray Machines
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Questions and Answers

Which of the following is true about automatic exposure control (AEC) in x-ray machines?

  • It eliminates the need to set the mA and kVp values
  • It eliminates the need to know in advance how much exposure time a radiograph will require (correct)
  • It eliminates the need for a sensing device under the x-ray table
  • It eliminates the need for a rotor switch
  • What is the purpose of the sensing device located under the x-ray table in AEC systems?

  • To detect the position of the Bucky
  • To control the exposure switch
  • To terminate the exposure time when a certain quantity of radiation has been detected at the image receptor (correct)
  • To set the mA and kVp values
  • What is the function of the rotor switch in x-ray machines?

  • To initiate the exposure by continuing to hold the switch
  • To terminate the exposure time
  • To spin the rotating anode and apply heat to the filament to create electrons (correct)
  • To detect when the tube is ready for an exposure
  • What is the purpose of the lockout feature in x-ray machines?

    <p>To prevent the initiation of an exposure before the rotor has reached operating speed and the filament has reached operating temperature</p> Signup and view all the answers

    What is the role of the exposure switch in x-ray machines?

    <p>To initiate the exposure by spinning the rotating anode</p> Signup and view all the answers

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