TABLE 1.

The Clinical and Imaging Features of Breast Cancer Patients With Invasive Ductal Carcinoma

Receptor Status	Age (year)	Maximum Diameter	Minimum Diameter	ADC Value of RS‐EPI (×10−3 cm2)	ADC Value of SS‐EPI (×10−3 cm2)	Normalized ADC Value of RS‐EPI	Normalized ADC Value of SS‐EPI
ER
Negative (n = 56)	51.59 ± 9.07	4.01 ± 1.67	2.58 ± 1.12	0.84 ± 0.12	0.80 ± 0.10	0.46 ± 0.11	0.52 ± 0.13
Positive (n = 95)	50.01 ± 11.62	3.30 ± 1.69	2.02 ± 0.92	0.83 ± 0.11	0.78 ± 0.10	0.48 ± 0.11	0.53 ± 0.12
P value	0.385	0.002	<0.001	0.510	0.480	0.543	0.282
PR
Negative (n = 92)	52.33 ± 10.31	3.86 ± 1.86	2.46 ± 1.10	0.82 ± 0.11	0.78 ± 0.11	0.46 ± 0.11	0.51 ± 0.13
Positive (n = 59)	47.90 ± 10.93	3.10 ± 1.35	1.85 ± 0.80	0.85 ± 0.11	0.80 ± 0.10	0.50 ± 0.11	0.56 ± 0.11
P‐value	0.013	0.006	<0.001	0.192	0.480	0.020	0.002
HER‐2
Negative (n = 100)	51.00 ± 11.25	3.43 ± 1.68	2.20 ± 1.08	0.81 ± 0.11	0.78 ± 0.11	0.46 ± 0.11	0.52 ± 0.12
Positive (n = 51)	49.90 ± 9.75	3.82 ± 1.76	2.27 ± 0.93	0.87 ± 0.10	0.80 ± 0.10	0.51 ± 0.11	0.55 ± 0.13
P value	0.572	0.204	0.365	0.001	0.199	0.010	0.173
Ki‐67
<20% (n = 36)	51.44 ± 10.63	3.18 ± 1.22	1.80 ± 0.60	0.84 ± 0.11	0.80 ± 0.11	0.50 ± 0.10	0.55 ± 0.12
≥20% (n = 115)	50.33 ± 10.81	3.68 ± 1.83	2.36 ± 1.10	0.83 ± 0.12	0.79 ± 0.10	0.46 ± 0.11	0.52 ± 0.12
P value	0.589	0.210	0.003	0.398	0.551	0.029	0.154

Bold values indicate statistically significant in P values.

ER = estrogen receptor; PR = progesterone receptor; HER‐2 = human epidermal growth factor receptor‐2; ADC = apparent diffusion coefficient.