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← ScienceWhich consequence results when asynchronous magnetic fields degrade MRI resolution?
A)Gradient nonlinearity causes spatial distortion✓
B)RF interference induces sample heating
C)Main field drift affects signal strength
D)Shim coil failure reduces homogeneity
💡 Explanation
Gradient nonlinearity causes spatial distortion because magnetic isochromat positions deviate. This deviation then causes the gradients, a part of spatial encoding, to become non-linear; therefore the image becomes distorted rather than displaying an accurate scan representation.
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