Question detail
In what scenario would a gamma emitter be preferred over an alpha emitter for medical tracing?
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. When a short half-life is required.
- B. When deep tissue penetration is needed.
- C. When high ionisation is beneficial.
- D. When the tracer needs to be absorbed by tissues.
Answer
When deep tissue penetration is needed.
Explanation
Gamma emitters are preferred for medical tracing when deep tissue penetration is required, as alpha particles cannot penetrate tissues effectively.
Common mistake
Misunderstanding Gamma Emitters
Students often confuse gamma emitters with other types of radiation, thinking they have similar properties and uses.
Focus on the unique characteristics of gamma radiation, such as its high penetration power and low ionising ability, which make it suitable for medical tracers.
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