Fig. 4

Correlation analysis. A: The mfALFF value of the right precentral gyrus in MHD-RLS patients is negatively correlated with the RLS scores (r =- 0.567, P = 0.002); B: The mALFF value of the right postcentral gyrus in MHD-RLS patients is negatively correlated with the RLS scores (r = -0.705, P < 0.001); C: The mReho value of the right precentral gyrus in MHD-RLS patients is negatively correlated with the RLS scores (r = -0.414, P = 0.032); D: The mReho value of the right postcentral gyrus in MHD-RLS patients is negatively correlated with the RLS scores (r = -0.410, P = 0.034); E: The hemoglobin concentration in MHD-RLS patients is negatively correlated with the RLS scores (r = -0.394, P = 0.042)