The MK value was significantly higher in BC with high ki-67 expression than those with low Ki-67 expression ([median, 1.288, range, 0.883~1.843]×10-3 mm2/s vs [median 1.081, range 0.714~1.410]×10-3 mm2/s; p = 0.012), while both ADC and MD values had a tendency to be lower in high Ki-67 expression BC than in low Ki-67 expression BC (Table 4). Here, MKI67 is linked to breast cancer.