Chapter 9 X-ray Interaction with Matter

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Mariyah
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306090
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Chapter 9 X-ray Interaction with Matter
Updated:
2015-08-05 16:29:26
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  1. In ______ scattering, the incident x-ray interacts with a target atom, causing it to become excited. The target atom immediately releases this excess energy as a scattered x-ray with wavelength equal to that of the incident x-ray
    coherent
  2. _______scattering occurs between moderate-energy x-rays and outer-shell electrons. It results in ionization of the target atom, a change in x-ray direction, and a reduction in x-ray energy. The wavelength of the scattered x-ray is greater than that of the incident x-ray.
    Compton
  3. Compton scattering _____ image contrast.

    1- Improves
    2- Reduces
    reduces
  4. X-rays in the diagnostic range also undergo ionizing interactions with inner-shell electrons. The x-ray is not scattered, but it is totally absorbed. This process is called the _____effect
    photoelectric
  5. what is the interaction called
    Compton Effect
  6. Photoelectric
  7. A photoelectric interaction _____ occur if the incident x-ray has energy equal to or greater than the electron binding energy

    1-Cannot
    2-Can
    cannot
  8. The x-ray interacts with the nuclear field, and two electrons that have opposite electrostatic charges are created this is called _____
    Pair Production
  9. Differential absorption ______as the kVp is reduced

    1-Decreases 
    2-Increases
    increases
  10. To image small differences in soft tissue, one must use ___ kVp to get maximum differential absorption

    1- Low
    2- High
    low
  11. clinical x-rays are _______. They are emitted over an entire spectrum of energies.
    1-polyenergetic
    2-monoenergetic
    polyenergetic
  12. The total reduction in the number of x-rays remaining in an x-ray beam after penetration through a given thickness of tissue is called 1-

    1-attenuation
    2-absorption
    attenuation

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