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Which outcome affects a MRI after prolonged cryogen quenches?

A)Quench-induced persistent current decay
B)Compensating gradient field stabilizes
C)Increased accuracy field shimming
D)Increased transverse relaxation efficiency

💡 Explanation

Persistent current decay results because the rapid loss of cryogen leads to heat generation exceeding coil’s conductive cooling capacity; this thermal rise disrupts magnetic flux pinning via flux creep, therefore reduced field strength occurs rather than stabilization, and shimming accuracy is unaffected.

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