For Ki-67, Spearman correlation analysis of Ki-67 LI indicated that there was lack of significant correlation between Ki-67 LI and tumor size (rho=0.400, p=0.112), solid tumor size (rho=0.414, p=0.098) or nADCmean (rho=0.086, p=0.743) for the 17 tumor-bearing nude rats. The gene discussed is MKI67; the disease is neoplasm.