Other questions in this quiz

2. Why don't we use alpha or beta sources as tracers?

  • they actually aid the target rather than kill it
  • everyone likes the word 'gamma' better
  • they do not penetrate the cell walls properly
  • they cause irreversible and fatal damage to organs

3. The half-life of xenon-133 is 2.3 days. What is the fraction of radioactivity after 6.9 days?

  • 1/16
  • 1/8
  • 1/4
  • 1/2

4. The radioactive isotope technetium-99 is NOT used for monitoring:

  • the kidneys
  • the heart
  • the brain
  • the lungs

5. A suitable gamma emmiting isotope to check kidney function would be iodine-123.

  • True
  • False

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