Extended Data Fig. 3: Comparison of manual quality control (MQC) and surface hole number (SHN) to other automated quality control metrics (QCMs) at Baseline (n = 10,294) and Year 2 (n = 999).
From: Addressing artifactual bias in large, automated MRI analyses of brain development

At Baseline, SHN values correlated more strongly with MQC ratings than did any other IQM (a), and SHN tiers closely approximated MQC ratings in detecting variance in other IQMs (b). The same patterns were apparent using Year 2 scans (c, d). In (b) and (d) box plots embedded within violin plots indicate median and interquartile range (IQR), whiskers indicate 1.5x IQR, and boxed numbers indicate the number outliers >6 standard deviations from the mean. FBER: Foreground-background energy ratio; BG; EFC: Entropy-focus criterion; QI2: Mortamet’s quality index 2.