X-ray Production and AEC
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Questions and Answers

Which of the following is a benefit of using AEC (Automatic Exposure Control) in radiographic imaging?

  • AEC allows the operator to guess the attenuation of the structures being imaged.
  • AEC does not require the use of ionization chambers.
  • AEC ensures consistency of signal quantity to the detector. (correct)
  • AEC measures the entire remnant beam.

    • What is a limitation of using AEC in radiographic imaging?

  • The location of the detector relative to the structures being imaged is not critical. (correct)
  • Each detector is approximately 50-75 cm2 in size.
  • AEC measures the entire remnant beam.
  • Technologists can only select one ionization chamber.

    • What does AEC stand for in radiographic imaging?

  • Attenuation Energy Calculation
  • Average Exposure Compensation
  • Advanced Emission Control
  • Automatic Exposure Control (correct)

    • Which one of these is the correct expression for the energy of a characteristic X-ray emitted during a K shell transition?

    <p>EK-SHELL – EM – SHELL</p> Signup and view all the answers

    What is the primary process in low Z elements during characteristic radiation production?

    <p>Electron cascade</p> Signup and view all the answers

    What is the term used to describe the radiation produced when projectile electrons interact with inner shell electrons?

    <p>Characteristic radiation</p> Signup and view all the answers

    What happens when projectile electrons pass close to the nucleus during bremsstrahlung production?

    <p>The electrons lose kinetic energy</p> Signup and view all the answers

    What is the unit of energy used to measure the energy of an electron in a 1V potential difference?

    <p>eV</p> Signup and view all the answers

    What is the approximate energy of an electron in a 100 kV potential difference?

    <p>100 keV</p> Signup and view all the answers

    What is kVp a measure of in X-ray imaging?

    <p>Voltage</p> Signup and view all the answers

    What happens when an electron collides with the anode target in an X-ray tube?

    <p>It releases its energy in the form of heat and X-rays</p> Signup and view all the answers

    What is characteristic radiation produced when projectile electrons interact with?

    <p>Inner shell electrons</p> Signup and view all the answers

    What determines the energy of the characteristic photons produced during characteristic radiation?

    <p>Binding Energy</p> Signup and view all the answers

    What is the predominant process in low Z elements during characteristic radiation production?

    <p>Electron cascade</p> Signup and view all the answers

    What happens when projectile electrons pass close to the nucleus during bremsstrahlung production?

    <p>The nucleus slows down the passing electrons</p> Signup and view all the answers

    What is the term used to describe the graph plotting photon energy vs the number of photons produced?

    <p>Emission Spectrum</p> Signup and view all the answers

    What determines the energy of the characteristic emissions and the efficiency of bremsstrahlung X-ray production?

    <p>Target material Z</p> Signup and view all the answers

    Which of the following is NOT a topic covered in this lecture?

    <p>Emission Spectrum</p> Signup and view all the answers

    What is the benefit of using AEC in radiographic imaging?

    <p>Consistency of signal quantity to the detector</p> Signup and view all the answers

    What is the primary limitation of using AEC in radiographic imaging?

    <p>Location of detector(s) relative to structures being imaged is critical</p> Signup and view all the answers

    Which of the following is NOT a location where X-ray production can occur?

    <p>Outer shell</p> Signup and view all the answers

    What is the purpose of Automatic Exposure Control (AEC) in radiographic imaging?

    <p>To ensure consistency of signal quantity to the detector</p> Signup and view all the answers

    Which of the following is NOT a benefit of using AEC in radiographic imaging?

    <p>Ability to measure the entire remnant beam</p> Signup and view all the answers

    Which of the following is NOT a limitation of using AEC in radiographic imaging?

    <p>Technologists may select any combination of ionization chambers</p> Signup and view all the answers

    What is the term used to describe the radiation produced when projectile electrons interact with inner shell electrons?

    <p>Bremsstrahlung radiation</p> Signup and view all the answers

    Which of the following is NOT a distinction discussed in this lecture?

    <p>AEC vs AED distinction</p> Signup and view all the answers

    What is the benefit of the operator not needing to guess how attenuating the structures being imaged will be for the beam energy being used?

    <p>Consistency of signal quantity to the detector</p> Signup and view all the answers

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