system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Which of the following doesn't produce radiation hazard: September 2006
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The correct answer is  Ans. C: Both of the above MRI is a noninvasive imaging technique that does not involve exposure to ionizing radiation. USG is based on piezoelectric effect and free from radiation.