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Lesson: Nuclear Radiation in Medicine

In this lesson, we will learn how to determine the suitability of a radioisotope for use in different medical applications.

Sample Question Videos

06:13

Worksheet • 8 Questions • 1 Video

Q1:

The table shows four different radioactive isotopes. Which isotopes would be suitable for use as radioactive tracers?

Isotope Iodine-129 Technetium-99m Rhodium-106 Iodine-123
Decay Type 𝛽 , 𝛾 𝛾 𝛽 , 𝛾 𝛾
Half-Life 15.7 million years 6 hours 30 seconds 13.2 hours
  • ATechnetium-99m and iodine-123
  • BIodine-129 and technetium-99m
  • CRhodium-106 and iodine-123
  • DIodine-129 and rhodium-106

Q2:

Which of the following is the correct unit for ionizing radiation dose?

  • ASievert (Sv)
  • BJoule (J)
  • CBecquerel (Bq)
  • DWatt (W)
  • EHertz (Hz)

Q3:

Rubidium-82 is a radioactive isotope of rubidium that decays via beta decay with a half-life of 1.27 minutes. Which of the following correctly explains why rubidium-82 is not suitable for use in radioactive implants?

  • ARubidium-82 decays too quickly to be of any use in radioactive implants.
  • BRadioactive implants require an isotope that decays via alpha decay, but rubidium-82 decays via beta decay.
  • CRubidium-82 does not exist naturally and producing it would be too expensive.
  • DRubidium-82 decays too slowly to be of any use in radioactive implants.
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