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Chap 5-7 Quiz
Question | Answer |
---|---|
If mA is decreased what will happen in the x-ray spectrum | the amplitude of the graph will decrease |
Which of the following is a major source of occupational exposure? | compton interactions |
Which interaction, within the diagnostic range, does not involve the removal of an orbital electron? | classical scattering |
What change will result in changing the Emax of the photons in the x-ray emission spectrum. (Emax = maximum energy) | A shift to the right and increase in amplitude |
What factor minorly affects the average energy and majorly affects the amplitude of the x-ray emission spectrum? | filtration |
The colon is imaged during a barium enema examination principally because of differences in | subject atomic number |
Which of the following x rays would be most likely to undergo classical scattering | 5 keV |
Positive contrast media is administered to increase which type of interaction? | photoelectric |
What can be determined from an x-ray emission spectrum | photon Emax (Emax =maximum energy) |
Anatomic structures that readily transmit x rays are | radiolucent |
During the Compton effect most of the incident x ray energy is given to which of the following | scattered x ray |
Which of the following occurs in a Compton interaction | an atom is ionized |
If filtration is increased what will occur in the x ray spectrum | the amplitude of the graph will decrease |
Differential absorption between bone and soft tissue occurs principally for which of the following reasons | there is a difference in effective atomic number |
During photoelectric interaction | an electron is emitted from the atom |
Differential absorption, although a complicated process, is basically the result of differences between | photoelectric effect and transmission |