Exam-style question
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What type of signals are detected in MRI to form images?.
- A.X-ray signals
- B.Ultrasound signals
- C.Radiofrequency signals
- D.Infrared signals
Model answer
What a good answer should say
- Radiofrequency signals
Explanation
Why this works
MRI detects radiofrequency signals emitted by hydrogen nuclei in the body after being excited by a strong magnetic field, which are then used to create images.
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