Scintillation Camera Components Quiz
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Scintillation Camera Components Quiz

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Questions and Answers

What is responsible for creating scintillation in the crystal?

  • The scattering of photons through Compton scattering
  • The deposition of energy by a photon through the photoelectric effect (correct)
  • The density and thickness of the crystal
  • The activation of the crystal by nonradioactive thallium

    • Which property of the crystal determines the useful energy range and resolution that can be detected?

  • Overall dimensions
  • Density (correct)
  • Thickness
  • Activation with nonradioactive thallium

    • What type of crystals have provided the best sensitivity for isotopes with energy levels between 50 and 150 keV?

  • Sodium iodide crystals (NaI) activated with nonradioactive thallium (correct)
  • Quartz crystals
  • Diamond crystals
  • Sodium iodide crystals (NaI) without activation

    • How does the thickness of the crystal affect sensitivity and resolution?

    <p>Thicker crystals result in lower sensitivity and resolution</p> Signup and view all the answers

    What does the sensitivity of an instrument refer to?

    <p>The smallest amount it can measure</p> Signup and view all the answers

    What percentage of the overall human tumor do primary neoplasms of the skeleton amount to?

    <p>0.5%</p> Signup and view all the answers

    Which genetic disorder makes people much more likely to develop several types of cancer, including osteosarcoma and other types of sarcoma?

    <p>Li-Fraumeni syndrome</p> Signup and view all the answers

    What gene mutation causes the inherited form of retinoblastoma and also increases the risk of developing bone or soft tissue sarcomas?

    <p>RB1 gene</p> Signup and view all the answers

    Which syndrome is caused by abnormal changes in the gene REQL4 and makes children more likely to develop osteosarcoma?

    <p>Rothmund-Thomson syndrome</p> Signup and view all the answers

    What type of neoplasms in bone are more common?

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

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