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← ScienceWhich outcome occurs when excessive ringing within the sinc function used for MRI gradient waveforms?
A)Spatial image artifacts and aliasing✓
B)Decreased signal-to-noise ratio (SNR)
C)Premature RF pulse termination
D)Increased gradient amplifier heating
💡 Explanation
Ringing (Gibbs phenomenon) causes unwanted signal excitation because imperfect filters cause sidelobes. Spurious signals appear as artifacts, because this intensity originates from an incorrect position, therefore causing aliasing artifacts near sharp edges in the final image, rather than affecting SNR or amplifier operation.
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