Exam-style question
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Which of the following best describes the role of collimation in gamma cameras?.
- A.To focus gamma rays onto the detector
- B.To prevent scatter radiation from affecting the image
- C.To amplify the gamma signal
- D.To convert gamma rays into visible light
Model answer
What a good answer should say
- To prevent scatter radiation from affecting the image
Explanation
Why this works
Collimation serves to prevent scatter radiation from reaching the detector, which can distort the image. By ensuring that only gamma rays from the intended source are detected, collimation enhances image quality.
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