Answers are grounded in this paper and cite their sources.
The conventionally determined SNR based on separate signal and noise regions in a single image will in general not agree with the true SNR measured in images after the application of certain reconstruction filters, multichannel reconstruction, or parallel imaging.
No takes yet. Share an insight, caveat, or question.
Dietrich et al. (2007) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: