“…However, the definition and range of additional categories in the “moderate” category, between the good and bad data categories, varies in previous work (Blumenthal et al, 2002; Shaw et al, 2007; Reuter et al, 2015; Tisdall et al, 2016). For instance, some authors used a 4-point scale (from none to severe, Blumenthal et al, 2002; Reuter et al, 2015) while others used a 5-point scale (from no detectable motion to lowest quality/severe motion, Pardoe et al, 2016). Moreover, most authors to date that have reported using QC ratings have not specified which artifact type(s) they focused on (e.g., ringing, blurring, gray, and white matter differentiation etc.)…”