Au Radiology Resident's Training Course Quiz

20 Questions | Total Attempts: 48

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Radiology Quizzes & Trivia

UCLA Radiation Safety


Questions and Answers
  • 1. 
    Gas-filled detectors are highly efficient for detection of high-energy gamma photons and x-rays as well as low-energy beta particles.
    • A. 

      True

    • B. 

      False

  • 2. 
    Which of the following radiation detectors are classified as ionization chambers?
    • A. 

      Sodium iodide (NaI) probe

    • B. 

      Geiger counter

    • C. 

      Dose calibrator

  • 3. 
    Because of the near-maximal ionization of the gas molecules in a Geiger counter in response to each radiation event interacting with a gas molecule in the detector, Geiger counters cannot be used to distinguish between types of radiation.
    • A. 

      True

    • B. 

      False

  • 4. 
    Select the three most effective ways to reduce exposure when working with radioactivity.
    • A. 

      Reduce the time spent in the vicinity of a radioactive source.

    • B. 

      Use soap when washing your hands.

    • C. 

      Maintain the maximum possible distance from the source.

    • D. 

      Shield the radioactive source.

    • E. 

      Wear a face mask.

  • 5. 
    The maximum allowable exposure to the household contacts of a patient receiving radioactivity is 5 mSv (500 mrem).
    • A. 

      True

    • B. 

      False

  • 6. 
    After the discovery of a medical event, the licensee is required to contact the NRC/Agreement State no later than 5 calendar days.
    • A. 

      True

    • B. 

      False

  • 7. 
    In the event of handling a radioactive spill, what equipment will you not need?
    • A. 

      Swipes

    • B. 

      Appropriate survey meter

    • C. 

      Personal protective equipment

    • D. 

      Dose calibrator

  • 8. 
    Which section of 10 CFR 35 is applicable to I-131 thyroid ablation treatments for which a written directive is required?
    • A. 

      10 CFR 35.100

    • B. 

      10 CFR 35.200

    • C. 

      10 CFR 35.300

  • 9. 
    When taking into account quality factors values for equivalent dose, gammas, x-rays and betas have a value of 1.
    • A. 

      True

    • B. 

      False

  • 10. 
    • A. 

      The parent nuclide always has a shorter half-life than the daughter nuclide.

    • B. 

      If the half-life of the parent nuclide is 50 times greater than the half-life of the daughter nuclide, the equilibrium portion of the activity curve is basically flat and is categorized as “secular” equilibrium.

    • C. 

      The parent nuclide is less tightly bound to the column than the daughter nuclide

    • D. 

      None of the above

  • 11. 
    Technetium-99m and molybdenum-99 are good examples of which type of equilibrium?
    • A. 

      Transient equilibrium in which the parent half-life is 10 to 100 times that of the daughter.

    • B. 

      Secular equilibrium in which the parent half-life is more than 100 times that of the daughter.

  • 12. 
    Of the three types of impurities present in a Tc-99m elution, which QC test for these impurities is optional?
    • A. 

      Mo-99 Breakthrough to test for radionuclidic impurity.

    • B. 

      Hydrolyzed Reduced Tc to test for radiochemical impurity.

    • C. 

      Aluminum Ion Breakthrough to test for chemical impurity.

  • 13. 
    During an equilibrium state within a 99Mo–99mTc generator, the total activity of 99mTc is always less than the total activity of 99Mo because 14% of 99Mo decays directly to 99Tc, bypassing the metastable state.
    • A. 

      True

    • B. 

      False

  • 14. 
    DOT hazardous materials training is required within 90 days of employment and retraining must be received at least once every 3 years.
    • A. 

      True

    • B. 

      False

  • 15. 
    The radiation dose rate at any point on the surface of an excepted (limited quantity) package of class 7 radioactive material cannot exceed what value?
    • A. 

      0.5 mrem/hr

    • B. 

      1 mrem/hr

    • C. 

      50 mrem/hr

    • D. 

      200 mrem/hr

  • 16. 
    Which option is NOT a Type A package labeling requirement?
    • A. 

      Mixtures of radionuclides must appear in order of decreasing radiotoxicity as space permits

    • B. 

      The activity must be in SI units of Becquerel (Bq, MBq, GBq)

    • C. 

      The Transport Index (TI), defined the maximum dose rate in mrem/hr at 1 meter from the package surface, is required only on Yellow II and Yellow III Type A packages.

    • D. 

      All Type A packages (White I, Yellow II, Yellow III) require a Transport Index

  • 17. 
    Shipper must provide a telephone number that can be contacted in case of emergency during normal business hours only.
    • A. 

      True

    • B. 

      False

  • 18. 
    Radiation surveys must be performed within how many hours of receipt during normal working hours?
    • A. 

      30 minutes

    • B. 

      3 hours

    • C. 

      5 hours