Relationship Between Resting-State Functional Magnetic Resonance Imaging and Different Time in Target Glucose Range in Elderly Patients with Type 2 Diabetes Mellitus

ReHO, ALFF, and fALFF value differences were present between the low and high TIR groups. Elderly T2DM patients in the low-TIR group were more susceptible to impaired brain function, which presented mainly as abnormal reduction in and activation of functional activity in some temporal lobes, frontal lobes, and occipital lobes in the resting state, and more significant when glycemic control is poorer.