rad review

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Author:
McCrae
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302717
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rad review
Updated:
2015-05-14 01:04:28
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rad
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part 1
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  1. If the exposure rate to a body standing 5 feet from a radiation source is 10 mR/min, what will be the dose to that body at a distance of 8 feet from the source?




     

     
    25.6 mR/min 



     

     
    16 mR/min 



     

     
    6.25 mR/min
    •  
    •  
    • 3.9 mR/min
  2. Silver halide 



     
    Sodium thiosulfate 


    Lithium fluoride 


    Aluminum oxide
    Lithium fluoride 
  3. What is the established annual occupational dose-equivalent limit for the lens of the eye?




     
    10 mSv 



     
    50 mSv 



     
    150 mSv 



     
    250 mSv
    •  
    •  
    • 150 mSv
  4. What is the annual TEDE limit for radiation workers?




     
    5 mSv 



     
    500 mSv 



     
    5,000 mSv 



     
    50 mSv
    •  
    •  
    • 50 mSv
  5. Which of the following personnel monitoring devices used in diagnostic radiography is considered to be the most sensitive and accurate?




     
    TLD 



     
    Film badge 



     
    OSL dosimeter 



     
    Pocket dosimeter
    •  
    •  
    • OSL dosimeter
  6. What is the established fetal dose-limit guideline for pregnant radiographers during the entire gestation period?




     
    0.1 rem 



     
    0.5 rem 



     
    5.0 rem 



     
    10 rem
    •  
    •  
    • 0.5 rem
  7. What is the annual dose-equivalent limit for the skin and hands of an occupationally exposed individual?




     
    5 rem 



     
    25 rem 



     
    50 rem 



     
    100 rem
    •  
    •  
    • 50 rem
  8. The dose-equivalent limit for the lens of the eye is 15 rem (____ mSv). 
    150
  9. An optically stimulated luminescence dosimeter contains which of the following detectors?




     
    Gadolinium 



     
    Aluminum oxide 



     
    Lithium fluoride 



     
    Photographic film
    •  
    • Lithium fluoride
  10. The term effective dose refers to




     
    whole-body dose 



     
    localized organ dose 



     
    genetic effects 



     
    somatic and genetic effects
    •  
    •  
    • whole-body dose
  11. According to the National Council on Radiation Protection and Measurements (NCRP), the gestational dose-equivalent limit for embryo/fetus of a pregnant radiographer is




     
    1 mSv 



     
    0.5 mSv 



     
    15 mSv 



     
    50 mSv
    •  
    •  
    • 0.5 mSv
  12. How much protection is provided from a 100-kVp x-ray beam when using a 0.50-mm lead-equivalent apron?




     
    40% 



     
    75% 



     
    88% 



     
    99%
    •  
    •  
    • 75%
  13. The National Council on Radiation Protection and Measurements (NCRP) has recommended what total equivalent dose limit to the embryo/fetus?




     
    0.5 mSv 



     
    5.0 mSv 



     
    50 mSv 



     
    500 mSv
    •  
    •  
    • 5.0 mSv
  14. What is the established fetal dose-limit guideline for pregnant radiographers during the entire gestation period?




     
    0.1 rem 



     
    0.5 rem 



     
    5.0 rem 



     
    10 rem
    •  
    •  
    • 0.5 rem
  15. What is the annual dose-equivalent limit for the skin and hands of an occupationally exposed individual?




     
    5 rem 



     
    25 rem 



     
    50 rem 



     
    100 rem
    •  
    •  
    • 50 rem
  16. According to the National Council on Radiation Protection and Measurements (NCRP), the gestational dose-equivalent limit for embryo/fetus of a pregnant radiographer is




     
    1 mSv 



     
    0.5 mSv 



     
    15 mSv 



     
    50 mSv
    •  
    •  
    • 0.5 mSv
  17. When the collimated field must extend past the edge of the body, allowing primary radiation to strike the tabletop, as in a lateral lumbar spine radiograph, what may be done to prevent excessive radiographic density owing to undercutting?




     
    Reduce the milliampere-seconds. 



     
    Reduce the kilovoltage. 



     
    Use a shorter SID. 



     
    Use lead rubber to absorb tabletop primary radiation.
    •  
    •  
    • Use lead rubber to absorb tabletop primary radiation.
  18. If the exposure rate to an individual standing 4.0 m from a source of radiation is 10 mR/h, what will be the dose received after 20 minutes at a distance of 6 m from the source?




     
    22.5 mR 



     
    7.5 mR 



     
    4.44 mR 



     
    1.48 mR
    •  
    • 1.48 mR
  19. With milliamperes (mA) increased to maintain output intensity, how is the ESE affected as the source-to-skin distance (SSD) is increased?




     
    The ESE increases. 



     
    The ESE decreases. 



     
    The ESE remains unchanged. 



     
    ESE is unrelated to SSD.
    •  
    •  
    • The ESE decreases.
  20. Which of the following will increase patient dose during fluoroscopy?

    1. Decreasing the SSD

    2. Using 2.5 mm Al filtration

    3. Restricting tabletop intensity to less than 10 R/min






     
    1 only 



     
    1 and 2 only 



     
    2 and 3 only 



     
    1, 2, and 3
    •  
    •  
    • 1 only
  21. If a patient received 2000 mrad during a 10-minute fluoroscopic examination, what was the dose rate?




     
    0.02 rad/min 



     
    0.2 rad/min 



     
    2.0 rad/min 



     
    20 rad/min
    •  
    •  
    • 0.2 rad/min Two thousand mrad is equal to 2 rad. If 2 rad were delivered in 10 minutes, then the dose rate is 2 ÷ 10, or 0.2 rad/min. 
  22. Which of the following safeguards is (are) taken to prevent inadvertent irradiation in early pregnancy?

    1. Patient postings

    2. Patient questionnaire

    3. Elective booking






     
    1 and 2 only 



     
    1 and 3 only 



     
    2 and 3 only 



     
    1, 2, and 3
    •  
    •  
    • 1, 2, and 3
  23. If a patient received 1,400 mrad during a 7-minute fluoroscopic examination, what was the dose rate?




     
    200 rad/min 



     
    5 rad/min 



     
    2.0 rad/min 



     
    0.2 rad/min
    •  
    •  
    • 0.2 rad/min 
    • A measure 1,400 mrad is equal to 1.4 rad. If 1.4 rad were delivered in 7 minutes, then the dose rate would be 0.2 rad/min: 

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