Radiation Biology Quiz

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Questions and Answers

What is the cellular target impacted by radiation that can kill/modify the cell?

  • DNA (correct)
  • Proteins
  • RNA
  • Mitochondria

Which type of radiation effect has no threshold?

  • Deterministic effects
  • Direct effects
  • Indirect effects
  • Stochastic effects (correct)

What does ALARA stand for in the principal philosophy of radiation safety?

  • Always Look Around, Reduce Accidents
  • As Low As Reasonably Achievable (correct)
  • Avoiding Long-term Adverse Radiation Affects
  • Alerting Local Authorities, Reducing Accidents

In radiation therapy, what type of effects are more concerning?

<p>Deterministic effects (B)</p> Signup and view all the answers

What is a key characteristic of radionuclides used for medical imaging?

<p>No particulate radiation (B)</p> Signup and view all the answers

How is PMT gain computed?

<p>PMT gain= dynode gain #dynodes (C)</p> Signup and view all the answers

What is the role of the Gamma camera collimator and PHA?

<p>Eliminate oblique gamma rays using collimator (D)</p> Signup and view all the answers

What is the key limitation of gamma camera imaging?

<p>Poor resolution (B)</p> Signup and view all the answers

How can the risk of exposure be minimized in Nuclear Medicine?

<p>Decrease time, increase distance, increase shielding (D)</p> Signup and view all the answers

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