RAD-139 CHAPTER 3 RADIATION IN MATTER QUIZ 2

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anatomy12
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264167
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RAD-139 CHAPTER 3 RADIATION IN MATTER QUIZ 2
Updated:
2014-02-26 20:17:30
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xray
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xray
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  1. Which of the following is not a type of interaction between x-radiation and biologic matter
    compton scattering
    bremstrahlung
    pair production
    photoelectric absorption
    bremsstrahlung
  2. In photoelectric absorption the kinetic energy of the incoming xray photon must be _____ to be able to dislodge an inner shell electron in its orbit
    the same as or greater than the energy that binds the electron in its orbit
  3. which of the following interactions between photons and matter involve a matter -antimatter annihalation reaction
    compon scatter
    coherent scatter
    pair production
    photoelectric absorption
    pair production
  4. the probability of occurence of photoelectric absorption ____ as the energy of the incident photon decreases and the atomic number of the irradiated atoms ____
    increases markedly, increases
  5. Which term refers to the radiation that occurs when an electron drops down from an outer orbit to fill a vacany in an inner orbit of the parent atom
    characteristic radiation
  6. what is a byproduct of compton interaction
    low energy scattered xray photon and compton scattered electron
  7. annihalation radiation is used in which modality
    pet scan
  8. xray photons that penetrate through the patient and strike the image receptor are called
    exit radiation
  9. what determines the probability of photoelectric absorption
    low kvp and high atomic number
  10. what radiation is considered as exit radiation
    pentrating photons and scattered xray photons only
  11. which of the following is/are considered attenuation:
    penetrating and scatter
    scatter and absorbed
    penetrating and absorbed
    scattered only
    scatter and absorbed photons
  12. what two interactions btw xradiation and matter may result in the production of small angle scatter
    coherent scattering and compton scattering
  13. as kvp increases the total number of photons that are transmitted without interaction(penetration) increases
    t or f
    t
  14. what type of contrast results from a photoelectric interactions (low kv)
    high contrast shortscale
  15. according to your tect what is the term for the number of characteristics xrays emitted per inner shell vacancy during photoelectric absorption
    fluorescent yield
  16. another term for a characteristic photon during a photoelectric interaction is
    auger electron
  17. the xray photon energy required to initiate pair production is (decimal value)
    1.022 mEv
  18. during the process of coherent scatter the incident xray photon interacts with
    an atom transferring its energy by causing some or all of the electrons of the atom to vibrate momentarily and radiate energy in the form of electromagnetic waves

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