X-ray Production And Interaction With Matter! Trivia Quiz

31 Questions | Total Attempts: 1284

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X-ray Production And Interaction With Matter! Trivia Quiz

If you plan to be a lab technician you need to be conversant with X-ray production and interaction with matter. Throughout the week we have covered a lot when it comes to reading an X-ray result and some of the characteristics. The quiz below is specifically designed to see just how much you have understood so far. Do give it a shot!


Questions and Answers
  • 1. 
    The speed and energy of the electron stream as it passes across an x-ray tube is primarily controlled by the:
    • A. 

      Applied kilovoltage

    • B. 

      Vacuum material

    • C. 

      Temperature

    • D. 

      Focus cup voltage

  • 2. 
    To determine how fast an x-ray tube will dissipate heat after several exposures, which of the following should be used?
    • A. 

      Anode cooling chart

    • B. 

      Housing colling chart

    • C. 

      Operator's manual

    • D. 

      Radiographic rating chart

  • 3. 
    Which of the following charts permit the calculation of the time necessary for the housing to cool enough for additional exposures to be made?
    • A. 

      Anode cooling charts

    • B. 

      Housing colling charts

    • C. 

      Radiographic rating charts

    • D. 

      Tube rating charts

  • 4. 
    The energy lost as the X-ray tube electrons pass through and interact with the outer orbital shell electrons of the tungsten target is commonly associated with the production of:
    • A. 

      High energy gamma rays

    • B. 

      Low energy beta particles

    • C. 

      Infrared radiation

    • D. 

      High energy x-ray photons

  • 5. 
    The energy of the photons produced during the bremsstrahlung process is dependent upon the: 1. The energy of the projectile electrons. 2. The atomic number of the target material. 3. The distance between the electron and the nucleus.
    • A. 

      1 only

    • B. 

      2 only

    • C. 

      3 only

    • D. 

      1,2, and 3

  • 6. 
    The penetrability of an X-ray photon is affected by all of the following EXCEPT:
    • A. 

      Frequency of the photon

    • B. 

      Mass of the photon

    • C. 

      Wavelength of the photon

    • D. 

      Energy of the photon

  • 7. 
    Which of the following factors will have a significant effect on the energies produced during characteristics x-ray production process?
    • A. 

      The atomic number of the material in the target of the xray tube

    • B. 

      The type of gas used to fill the filament-anode-gap

    • C. 

      The composition of the material used in the tube envelope

    • D. 

      Temperature to which the filament is heated

  • 8. 
    All of the following factors are required for the production of x0rays EXCEPT:
    • A. 

      A source of high velocity projectile electrons

    • B. 

      A source of loosely bound (ionized) electrons

    • C. 

      A target with a high atomic number

    • D. 

      A strong magnetic field

  • 9. 
    The majority of X-rays produced in an X-ray tube are the result of:
    • A. 

      A rapid deceleration of projectile electrons as they pass through the target material

    • B. 

      A rapid deceleration of projectile neutrons as they pass through the target material

    • C. 

      A rapid acceleration of projectile protons as they pass through the targer material

    • D. 

      A rapid acceleration of projectile positrons as they pass through the target material

  • 10. 
    In the diagnostic energy region, approximately what percentage of electron stream energy is converted into x-rays?
    • A. 

      .2% - 1%

    • B. 

      7% - 15%

    • C. 

      37% - 45%

    • D. 

      86%- 99%

  • 11. 
    When a stream of fast-moving electrons interacts with the target of the anode, X-rays are generated by two different processes called:
    • A. 

      Bremsstrahlung and characteristic radiation

    • B. 

      Primary and secondary radiation

    • C. 

      Leakage and scatter radiation

    • D. 

      Compoton and photoelectric radiation

  • 12. 
    The maximum heat capacity of the anode of a radiographic tube is related to the: 1. diameter of the anode disk 2. design of the thermal envelope 3. The rotational speed of the anode disk
    • A. 

      1 only

    • B. 

      2 only

    • C. 

      3 only

    • D. 

      1, 2, and 3

  • 13. 
    Excessive heating of the tube may lead to vaporization of the filament or anode.  Over a long period of time, this may result in any of the following EXCEPT:
    • A. 

      Arcing within the tube

    • B. 

      Filtration of the beam

    • C. 

      The deterioration of the vacuum

    • D. 

      An increase in the beam intensity

  • 14. 
    Surface irregularities on the face of the anode(pitting) are most often associated with a(an):
    • A. 

      Excessive amount of filtering by the vacuum in the tube

    • B. 

      Reduction in the radiation output during the exposure

    • C. 

      Increased output of radiation due to the blooming of the focal spot

    • D. 

      Reduction in the potential difference across the xray tube

  • 15. 
    At a potential of 70 kVp the projectile electrons will reach a speed of approximately half the speed of light
    • A. 

      True

    • B. 

      False

  • 16. 
    The maximum anode heat storage capacity of a radiographic tube is related to the type and size of the: 1. anode disk 2. thermal cushion 3. anode materials
    • A. 

      1 only

    • B. 

      2 only

    • C. 

      3 only

    • D. 

      1, 2, and 3

  • 17. 
    Which of the following portion of the induction motor of a rotating anode normally operates within the vacuum of the tube? 1. ball bearings 2. anode stem 3. rotor
    • A. 

      1 only

    • B. 

      2 only

    • C. 

      3 only

    • D. 

      1, 2, and 3

  • 18. 
    The main function of the pyrex glass that forms the protective envelope of the x-ray tube is: 1. containment of the electron stream near the filament 2. containment of the vacuum within the X-ray tube 3. production of the static electrical field around the filament
    • A. 

      1 only

    • B. 

      2 only

    • C. 

      3 only

    • D. 

      1, 2, and 3

  • 19. 
    The penetrability of  an xray photon is effected by all of the following EXCEPT:
    • A. 

      Frequency of the photon

    • B. 

      Mass of the photon

    • C. 

      Wavelength of the photon

    • D. 

      Energy of the photon

  • 20. 
    Which of the following is likely to result in the appearance of an overload light? 1. the use of an excessive source-to0mage receptor distance 2. the use of a technique that exceeds the thermal capacity of the anode 3. the failure of the radiographer to push in the Bucky tray
    • A. 

      1 only

    • B. 

      2 only

    • C. 

      3 only

    • D. 

      1, 2, and 3

  • 21. 
    Which of the following is a byproduct of the photoelectric effect interaction 1. bremsstrahlung radiation 2. photoelectron 3. characteristic radiation
    • A. 

      1 only

    • B. 

      2 only

    • C. 

      2 and 3 only

    • D. 

      3 only

    • E. 

      1, 2, and 3

  • 22. 
    Which of the following describes the radiation that makes up the X-ray beam after it has traversed the patient?
    • A. 

      Exit or image formation (remnant) radiation

    • B. 

      Primary radiation

    • C. 

      Secondary radiation

    • D. 

      Scatter radiation

  • 23. 
    The interaction between x-ray photons and tissue that is responsible for radiographic contrast, but that also contributes significantly to patient dose is:
    • A. 

      Photoelectric effect

    • B. 

      Compton scatter

    • C. 

      Coherent scatter

    • D. 

      Pair production

  • 24. 
    The photoelectric effect is more likely to occur with: 1. absorbers having a high Z number 2. absorbers having a high mass density 3. positive contrast media
    • A. 

      1 and 2 only

    • B. 

      1 and 3 only

    • C. 

      2 and 3 only

    • D. 

      1, 2, and 3

  • 25. 
    What is the term used to describe x-ray photon interaction with matter and the transference of a part of the photon's energy to matter?
    • A. 

      Absorption

    • B. 

      Scattering

    • C. 

      Attenuation

    • D. 

      Divergence