Exam-style question
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What happens to hydrogen nuclei when placed in a strong magnetic field during an MRI scan?.
- A.They become ionised
- B.They align with the magnetic field
- C.They emit gamma radiation
- D.They vibrate at high frequencies
Model answer
What a good answer should say
- They align with the magnetic field
Explanation
Why this works
When hydrogen nuclei are placed in a strong magnetic field during an MRI scan, they align with the direction of the magnetic field. This alignment is essential for the subsequent imaging process, as it allows for the manipulation of these nuclei using radio-frequency pulses to generate images.
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