Ionising Radiation Overview Quiz
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Questions and Answers

What is the dominant factor influencing contrast in medical imaging, particularly in identifying breast tumors?

  • Electron mobility in the surrounding medium
  • Photoelectric absorption effect (correct)
  • Speed of electrons in circular orbits
  • Nuclear charge of the atom
  • Which atomic model is associated with the depiction of the atom as a nucleus surrounded by electrons traveling in circular orbits?

  • Rutherford's atomic model
  • Dalton's atomic model
  • Thomson's atomic model
  • Bohr's atomic model (correct)
  • In X-ray imaging, what property of tissues allows for differentiation based on density and chemical composition?

  • Electron mobility
  • Nuclear charge
  • Interactions with photons (correct)
  • Speed of light absorption
  • What fundamental concept is highlighted in the document that explains the interactions of photons with matter in medical imaging?

    <p>Electromagnetic radiation</p> Signup and view all the answers

    Which law related to radiation attenuation is emphasized in the document for its practical relevance in medical imaging and radiation protection?

    <p>Inverse Square Law of Attenuation</p> Signup and view all the answers

    Which of the following interactions of photons with matter involves the complete absorption of a photon?

    <p>Pair production</p> Signup and view all the answers

    What term is used to describe the reduction in radiation intensity as the distance from the radiation source increases?

    <p>Attenuation</p> Signup and view all the answers

    How is the energy associated with photons denoted?

    <p>Electronvolts</p> Signup and view all the answers

    What are the three major interactions of photons with matter discussed in the document?

    <p>Photoelectric absorption, Compton scattering, pair production</p> Signup and view all the answers

    In what field can understanding ionizing radiation have a significant impact according to the document?

    <p>Medicine</p> Signup and view all the answers

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