Medical Radiography Quiz Questions

121 Questions | Total Attempts: 573

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Radiography Quizzes & Trivia

Let's start this quiz it will give you the different functions of medical radiography. Find out now how much do you know about it!


Questions and Answers
  • 1. 
    A dental assistant may expose radiographs
    • A. 

      If the dentist gives permission

    • B. 

      If he or she is a certified dental assistant

    • C. 

      If it is permissible in the state he or she is employed

    • D. 

      If he or she is supervised by the dentist or hygenist

  • 2. 
    The most sensitive cells to ionizing radiation are
    • A. 

      Bone cells

    • B. 

      Muscle cells

    • C. 

      Nerve cells

    • D. 

      Reproductive cells

  • 3. 
    The best type of xray to penetrate body tissue is 
    • A. 

      Low frequency

    • B. 

      Hard rays, short wavelengths

    • C. 

      Long wavelength

    • D. 

      Soft rays, long wavelengths

  • 4. 
    Xrays are made up of
    • A. 

      Electrons

    • B. 

      Protons

    • C. 

      Photons

    • D. 

      Neutrons

  • 5. 
    The cathode is a filament composed of
    • A. 

      Tungsten

    • B. 

      Silver

    • C. 

      Copper

    • D. 

      Aluminum

  • 6. 
    Milliamperage controls
    • A. 

      The speed with which electrons move from cathode to anode

    • B. 

      Cooling of the anode

    • C. 

      Heating of the anode

    • D. 

      Heating of the cathode

  • 7. 
    Collimation of the primary beam
    • A. 

      Decreases the exposure time

    • B. 

      Restricts the size and shape of the xray beam

    • C. 

      Makes the primary beam more difficult to connect

    • D. 

      Dictates the contrast of the final radiograph

  • 8. 
    The lead diaphragm determines the size and shape of the
    • A. 

      Electron cloud

    • B. 

      Film used

    • C. 

      Xray beam

    • D. 

      Filament

  • 9. 
    The portion of the target that is struck by electrons is called the 
    • A. 

      Focal spot

    • B. 

      Photon point

    • C. 

      Principle point

    • D. 

      End point

  • 10. 
    Proper collimation for the film size and target-film distance will 
    • A. 

      Increase the wavelength

    • B. 

      Decrease the wavelength

    • C. 

      Increase the kvp

    • D. 

      Decrease radiation recieved by the patient

  • 11. 
    To increase the penetrating power of an xray beam, the auxiliary must
    • A. 

      Increase KvP

    • B. 

      Decrease KvP

    • C. 

      Increase mA

    • D. 

      Increase FFD

  • 12. 
    The xray at the center of the xray beam is called the 
    • A. 

      Photon ray

    • B. 

      Central ray

    • C. 

      Secondary beam

    • D. 

      Restricted beam

  • 13. 
    The housing of the xray tube is
    • A. 

      Copper

    • B. 

      Plastic

    • C. 

      Tungsten

    • D. 

      Glass

  • 14. 
    Filtration of the xray beam protects the patient by 
    • A. 

      Eliminating all radiation from the xray head

    • B. 

      Eliminating weak wavelength xrays from the xray beam

    • C. 

      Eliminating short wavelength xrays form xray beam

    • D. 

      Decreasing exposure time

  • 15. 
    The size of the collimated beam for intraoral radiology measured at the patients skin is
    • A. 

      1.5 - 1.75 inches

    • B. 

      2.0 - 2.25 inches

    • C. 

      2.75 - 3.0 inches

    • D. 

      3.25- 3.5 inches

  • 16. 
    Scatter radiation is a type of 
    • A. 

      Secondary radiation

    • B. 

      Primary radiation

    • C. 

      Stray radiation

    • D. 

      Filtered radiation

  • 17. 
    The quality, or penetrating power, of secondary radiation is 
    • A. 

      More than that of primary radiation

    • B. 

      Less than that of primary radiation

    • C. 

      The same as that of primary radiation

    • D. 

      Unrelated to that of primary radiation

  • 18. 
    The first sign of xray dermatitus is 
    • A. 

      Alopecia

    • B. 

      Erythema

    • C. 

      Dry skin

    • D. 

      Pain

  • 19. 
    The time period between the effects of cumulative radiation and visible tissue damage is the 
    • A. 

      Short-term period

    • B. 

      Acute effect period

    • C. 

      Latent period

    • D. 

      Long-term period

  • 20. 
    The amount of radiation a person recieves
    • A. 

      Begins anew each day

    • B. 

      Is cumulative only on the skin

    • C. 

      Is cumulative in the entire body

    • D. 

      Is not harmful in small doses

  • 21. 
    Maximum protection of the patient requires that the xray beam pass through a
    • A. 

      Shielded open-ended cone

    • B. 

      Plastic close-ended cone

    • C. 

      Shielded closed- ended cone

    • D. 

      Lead apron

  • 22. 
    A technique used to measure the operators exposure to radiation is 
    • A. 

      To check the color of the operators finger nail

    • B. 

      For the operator to wear a radiation film badge

    • C. 

      To multiply the number of films the operator has exposed by 0.1 rem

    • D. 

      To count the number of full mouth xray taken

  • 23. 
    Accumulated radiation dosage for those who work with radiation may not exceed
    • A. 

      0.1 rem/week

    • B. 

      1 rem/week

    • C. 

      10 rem/week

    • D. 

      100 rem/week

  • 24. 
    The operator must avoid  all of the following EXCEPT 
    • A. 

      Stray radiation

    • B. 

      Secondary radiation

    • C. 

      Primary beam

    • D. 

      Natural sunlight

  • 25. 
    To avoid exposure to secondary radiation, the operator should stand
    • A. 

      At least 6 feet from xray head

    • B. 

      2 feet to the right of primary beam

    • C. 

      Any distance in back of xray head

    • D. 

      4 feet in front of the patient