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Table 3 Group characteristics according to the mean glandular dose (75th percentile)

From: Radiation dose affected by mammographic composition and breast size: first application of a radiation dose management system for full-field digital mammography in Korean women

 

<MGD 75th percentile

≥MGD 75th percentile

p value

View (n = 2120)

1592 (75.06%)

528 (24.9%)

 

Mean glandular dose (mGy)

1.49 ± 0.43 (0.04–2.28)

2.76 ± 0.47 (2.18–5.97)

 

Age (years)

53.17 ± 10.44

48.19 ± 10.83

<0.0001

Mammographic breast size (mm)

79.71 ± 23.45

84.94 ± 19.64

<0.0001

Mammographic breast composition

 Non-dense

637 (40.01%)

54 (10.21%)

<0.0001

 Dense

955 (59.99%)

474 (89.77%)

 

Breast-conserving surgery

 No

1430 (89.82%)

430 (81.44%)

<0.0001

 Yes

162 (10.18%)

98 (18.53%)

 

Peak kilovoltage (kVp)

28.09 ± 1.83

28.73 ± 1.91

<0.0001

Current (mAs)

89.60 ± 24.69

126.77 ± 34.65

<0.0001

Compressed breast thickness (mm)

46.86 ± 12.36

51.18 ± 10.98

<0.0001

Breast compression force (N)

94.52 ± 27.06

106.51 ± 30.20

<0.0001

  1. Values are given as numbers (%) for categorical variables or means ± standard deviations (ranges) for continuous variables. p values were calculated using independent Student’s t tests
  2. MGD mean glandular dose