Question detail
Why is it important for medical tracers to have a short enough half-life?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Hazards and uses of radioactive emissions and of background radiation
Question
- A. To ensure they are effective for long periods
- B. To minimize the risk of radiation exposure
- C. To allow for repeated testing
- D. To increase their ionizing power
Answer
To minimize the risk of radiation exposure
Explanation
Medical tracers must have short enough half-lives to minimize the risk of radiation exposure to patients after the procedure is completed.
Common mistake
Misunderstanding Half-Life Suitability
Students often confuse the concept of half-life with the total duration a radioactive isotope remains active, failing to recognize that a suitable half-life must balance effectiveness and safety in medical or industrial applications.
To fix this, students should focus on understanding that a suitable half-life allows for effective use of the isotope while minimizing exposure risk, ensuring they can explain the importance of both short and long half-lives in different contexts.
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