Table 1.

Scoring criteria for qualitative evaluation

Score	Overall image quality	Perceived SNR	Artifacts	Image sharpness
1	Non-diagnostic	Poor	Severe	Very severe blurring, nondiagnostic
2	Poor, but still interpretable	Fair	Moderate	Severe blurring, affecting diagnosis
3	Fair	Average	Mild	Moderate blurring
4	Good	Good	Minimal	Minimal blurring
5	Excellent	Excellent	None	Sharp boundary

SNR, signal-to-noise ratio.