Radiation Potection

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  1. Which of the following dose-response curve characteristics represent genetic and some somatic responses to radiation?















    1. Linear
    2. Nonthreshold
    3. Sigmoidal





    A
     
    1 only 


    B
     
    1 and 2 only 


    C
     
    1 and 3 only 


    D
     
    1, 2, and 3
    • Image Upload 1
    •  
    • B
    •  
    • 1 and 2 only
  2. Genetic effects of radiation and some somatic effects, like leukemia, are plotted on a___ dose–response curve. 
     linear
  3. What is the relationship between LET and RBE?



    A
     
    As LET increases, RBE increases. 


    B
     
    As LET increases, RBE decreases. 


    C
     
    As LET decreases, RBE increases. 


    D
     
    There is no direct relationship between LET and RBE.
    • Image Upload 2
    •  
    • A
    •  
    • As LET increases, RBE increases.
  4. Late radiation-induced somatic effects include

    1. thyroid cancers

    2. cataractogenesis

    3. skin cancers





    A
     
    1 only 


    B
     
    1 and 2 only 


    C
     
    2 and 3 only 


    D
     
    1, 2, and 3
    • Image Upload 3
    •  
    • D
    •  
    • 1, 2, and 3
  5. Examples of stochastic effects of radiation exposure include

    1. radiation-induced malignancy

    2. genetic effects

    3. leukemia





    A
     
    1 only 


    B
     
    1 and 2 only 


    C
     
    2 and 3 only 


    D
     
    1, 2, and 3
    • Image Upload 4
    •  
    • D
    •  
    • 1, 2, and 3
  6. Late effects of radiation, whose incidence is dose related and for which there is no threshold dose, are referred to as



    A
     
    nonstochastic 


    B
     
    stochastic 


    C
     
    chromosomal aberration 


    D
     
    hematologic depression
    • Image Upload 5
    •  
    • B
    •  
    • stochastic
  7. Increasing that dose will increase the likelihood of the occurrence but will not affect its severity; these effects are termed _____
    stochastic.
  8. The symbols Image Upload 6 Ba and Image Upload 7 Ba are examples of which of the following?



    A
     
    Isotopes 


    B
     
    Isobars 


    C
     
    Isotones 


    D
     
    Isomers
    • Image Upload 8
    •  
    • A
    •  
    • Isotopes
  9. have the same atomic number but different mass numbers (numbers of neutrons).
     isotopes
  10. _____ are atoms with the same mass number but different atomic numbers. 
    Isobars
  11. ____ have the same number of neutrons but different atomic numbers.
    Isotones
  12. ____ have the same atomic number and mass number;
    Isomers
  13. Early symptoms of acute radiation syndrome include

    1. leukopenia

    2. nausea and vomiting

    3. cataracts





    A
     
    1 and 2 only 


    B
     
    2 only 


    C
     
    1 and 3 only 


    D
     
    2 and 3 only
    • Image Upload 9
    •  
    • A
    •  
    • 1 and 2 only
  14. How are LET and biologic response related?



    A
     
    They are inversely related. 


    B
     
    They are directly related. 


    C
     
    They are related in a reciprocal fashion. 


    D
     
    They are unrelated.
    • Image Upload 10
    •  
    • B
    •  
    • They are directly related.
  15. What is used to account for the differences in ionizing characteristics of various radiations, when determining their effect on biologic material?















    1. Radiation weighting factors ( W )
    2. Tissue weighting factors ( W )
    3. Absorbed dose





    A
     
    1 only 


    B
     
    1 and 2 only 


    C
     
    2 and 3 only 


    D
     
    1, 2, and 3
    • Image Upload 11
    •  
    • A
    •  
    • 1 only
  16. Which interaction between x-ray photons and matter results in total absorption of the incident photon?



    A
     
    Photoelectric effect 


    B
     
    Compton scattering 


    C
     
    Coherent scattering 


    D
     
    Pair production
    • Image Upload 12
    •  
    • A
    •  
    • Photoelectric effect
  17. The dose of radiation that will cause a noticeable skin reaction is referred to as the



    A
     
    LET 


    B
     
    SSD 


    C
     
    SED 


    D
     
    SID
    • Image Upload 13
    •  
    • C
    •  
    • SED
  18. Stochastic effects of radiation include



    A
     
    blood changes 


    B
     
    genetic alterations 


    C
     
    cataractogenesis 


    D
     
    reduced fertility
    • Image Upload 14
    •  
    • B
    •  
    • genetic alterations
  19. Stochastic effects of radiation are nonthreshold and randomly occurring. Examples of stochastic effects include carcinogenesis and genetic effects. The chance of occurrence of stochastic effects is directly related to the radiation dose; that is, as radiation dose increases, there is a greater likelihood of genetic alterations or development of cancer. Nonstochasticeffects are predictable threshold responses; that is, a certain quantity of radiation must be received before the effect will occur, and the greater the dose, the more severe is the effect.
  20. Which of the following is (are) considered long-term somatic effect(s) of exposure to ionizing radiation?

    1. Life-span shortening

    2. Carcinogenesis

    3. Cataractogenesis





    A
     
    1 only 


    B
     
    1 and 2 only 


    C
     
    2 and 3 only 


    D
     
    1, 2, and 3
    • Image Upload 15
    •  
    • D
    •  
    • 1, 2, and 3
  21. The symbols Image Upload 16 and Image Upload 17 are examples of which of the following?



    A
     
    Isotopes 


    B
     
    Isobars 


    C
     
    Isotones 


    D
     
    Isomers
    • Image Upload 18
    •  
    • A
    •  
    • Isotopes
  22. Stochastic effects of radiation are those that

    1. have a threshold

    2. may be described as “all-or-nothing” effects

    3. are late effects





    A
     
    1 only 


    B
     
    1 and 2 only 


    C
     
    2 and 3 only 


    D
     
    1, 2, and 3
    • Image Upload 19
    •  
    • C
    •  
    • 2 and 3 only
  23. Isotopes are atoms that have the same



    A
     
    mass number but a different atomic number 


    B
     
    atomic number but a different mass number 


    C
     
    mass number but a different neutron number 


    D
     
    atomic number and mass number
    • Image Upload 20
    •  
    • B
    •  
    • atomic number but a different mass number
  24. In radiation protection, the product of absorbed dose and the correct modifying factor (rad × QF) is used to determine



    A
     
    roentgen (C/kg) 


    B
     
    rem (Sv) 


    C
     
    curie (Cu) 


    D
     
    radiation quality
    • Image Upload 21
    •  
    • B
    •  
    • rem (Sv)
  25. Which of the following terms refers to the period between conception and birth?



    A
     
    Gestation 


    B
     
    Congenital 


    C
     
    Neonatal 


    D
     
    In vitro
    • Image Upload 22
    •  
    • A
    •  
    • Gestation
  26. Which of the following is (are) possible long-term somatic effects of radiation exposure?

    1. Blood changes

    2. Cataractogenesis

    3. Embryologic effects





    A
     
    1 only 


    B
     
    1 and 2 only 


    C
     
    2 and 3 only 


    D
     
    1, 2, and 3
    • Image Upload 23
    •  
    • C
    •  
    • 2 and 3 only
Author
ID
302826
Card Set
Radiation Potection
Description
Biological aspects of radiation 2
Updated
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