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← ScienceWhich outcome occurs when an MRI machine's superconducting magnet quenches unexpectedly releasing stored magnetic field energy?
A)Rapid helium boil-off causing overpressure✓
B)Sample degradation due to thermal shock
C)Permanent magnet demagnetization within proximity
D)Data corruption from high-frequency interference
💡 Explanation
When an MRI magnet quenches, resistive heating occurs due to sudden loss of superconductivity and rapid energy release resulting in the flash boiling of liquid helium causing extreme overpressure. Therefore, rapid helium boil-off and consequent overpressure result, rather than sample damage, demagnetization, or data corruption which require unrelated processes.
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