Exam-style question
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What is a disadvantage of using a tracer with a very short half-life?.
- A.It may not provide enough time for imaging
- B.It is always more expensive
- C.It emits too much radiation
- D.It is difficult to detect
Model answer
What a good answer should say
- It may not provide enough time for imaging
Explanation
Why this works
A tracer with a very short half-life may decay too quickly, potentially not providing sufficient time for imaging, which can hinder diagnosis.
Common mistake
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