Reproducibility and feasibility of optic nerve diffusion MRI techniques: single-shot echo-planar imaging (EPI), readout-segmented EPI, and reduced field-of-view diffusion-weighted imaging

Table 2 Evaluation criteria of image quality

	Overall image quality	Artifacts (degree of susceptibility)	Image blurring	Distortion (compared with the corresponding T2w imaging)
0	Non-diagnostic	No artifacts	None	None
1	Poor	Minor artifacts	Minimal	Minimal
2	Fair	Moderate artifacts	Moderate	Moderate
3	Good	Severe artifacts	Considerable	Considerable
4	Excellent	Very severe artifacts	Pronounced	Pronounced

ISSN: 1471-2342