Table 1 Patient demographics and baseline characteristics.

Height (cm)

158.43 ± 4.68, 158 (150–170)

Weight (kg)

53.88 ± 6.82, 53 (40–72)

BMI (kg/m²)

21.46 ± 2.50, 20.83 (16.82–28.04)

Age (years)

42.22 ± 8.44, 43 (22–63)

Mastectomy subtype (%)

 TM

9 (9.2)

 SSM

24 (24.5)

 NSM

65 (66.3)

Operation side (%)

 Left

42 (42.9)

 Right

56 (57.1)

Final pathology (%)

 Invasive ductal carcinoma

64 (65.3)

 Ductal carcinoma in situ

25 (25.5)

 Spindle cell tumor

1 (1.0)

 Others

8 (8.2)

T stage

 0

29 (29.6)

 1

37 (37.6)

 2

29 (29.6)

 3

3 (3.1)

N stage

 0

79 (80.6)

 1

16 (16.3)

 2

3 (3.1)

Implant type

 Mentor

88(89.8)

 Allergan

10(10.2)

Chemotherapy (%)

63 (64.3)

Radiation therapy (%)

14 (14.3)

Endocrine therapy (%)

12 (12.2)

Lymph node dissection (%)

22(22,4)

Time from post-op MRI to satisfaction surveys (months)

11.88 ± 4.83, 11 (5–32)

Implant volume (cc)

221.50 ± 54.57, 215 (120–335)

MRI implant volume (cm³)

232.90 ± 57.78, 227 (126–386)

The difference of both breast volume (ml)

97.51 ± 66.41, 86.98 (2.07–289.01)

Breast Asymmetry ratio

0.27 ± 0.25, 0.21 (0.01–1.71)