These figures show the area under the receiver operating characteristics (AUROC) of QUI parameters of PSV, EDV, maximal pixel-intensity (P.I.Max), minimal pixel-intensity (P.I.Min) (5a), and RI, SWV, cortical thickness (Thickness) (5b) for determining pathologic moderate to severe CKD. The cutoff value, sensitivity and specificity of each QUI parameter in determining pathologic moderate to severe CKD are listed in Table 5.