Similar negative correlations of ADC and Ki67 are also found in ductal breast cancer research (r = −0.717 do r = −410, p < 0.001) [25], prostate cancer (r = −0.332, p < 0.05) [26] and rectal cancer (r = −0.555, p < 0.001) [27]. This evidence concerns the gene MKI67 and prostate cancer.