Exam-style question
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Explain the concept of resonance in the context of magnetic resonance imaging (MRI).
Model answer
What a good answer should say
- Resonance in MRI occurs when the frequency of radio-frequency pulses matches the natural frequency of the hydrogen nuclei in the body.
- This matching causes the nuclei to absorb energy and transition to a higher energy state, which is then detected to form images.
Explanation
Why this works
This answer effectively demonstrates an understanding of resonance by linking it to the specific context of MRI. It tests the student's ability to connect theoretical concepts with practical applications in medical imaging.
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