MKI67 and neoplasm: The 68Ga-DOTATATE PET/CT SUVmax correlated negatively with tumor Ki-67 (r = - 0.64, p = 0.002, Figure 3), which was consistent with the result that 68Ga-DOTATATE PET/CT SUVmax in patients with G1 was higher than that of patients with G2 tumors (Table 4).