Table 2. Correlation of ADC with prognostic factors in IDC NOS.

Prognostic factors	No. of cases(n=290)	ADC value
		(×10−3 mm2 s−11)	p-value
Oestrogen receptor	Negative (n=113)	0.941±0.168
	Positive (n=177)	0.885±0.152	0.003
Progesterone receptor	Negative (n=135)	0.928±0.171
	Positive (n=155)	0.888±0.148	0.032
HER2	Negative (n=149)	0.911±0.158
	Positive (n=141)	0.903±0.164	0.677
Ki-67	<20% (n=112)	0.933±0.152
	>20% (n=178)	0.890±0.164	0.028
MVD	Not increased (n=63)	0.954±0.167
	Increased (n=227)	0.894±0.156	0.009
Size	<2 cm (n=133)	0.918±0.162
	>2 cm (n=157)	0.898±0.159	0.294
LN metastasis	Negative (n=188)	0.919±0.166
	Positive (n=102)	0.885±0.147	0.090

ADC, apparent diffusion coefficient; HER2, human growth factor receptor 2; IDC NOS, invasive ductal carcinoma not otherwise specified; LN, lymph node; MVD, microvascular density.