Figure 4. Quantitative metrics of image quality show heterogeneous alignment with manual ratings.

A: The standardized mean (+/- S.E.M.) for each quantitative metric is displayed by average manual rating class. B: Partial Spearman correlation coefficients between average manual quality rating and the T1 derived quantitative metrics; covariates included sex, age, and age squared. Across all datasets, Euler number showed the strongest association with manual quality ratings.