Table 2.
Mean differences and 95% confidence interval in percent glandular tissue (%-G), gland volume (GV), fat volume (FV), and total breast volume (TV) by Tukey's test.
| Methods compared | %-G | GV (mL) | FV (mL) | TV (mL) |
|---|---|---|---|---|
| MATH versus HSMa | 1.1 (−2.85, 4.94)b | 11.4 (−32.52, 55.26) | 10.7 (−55.57, 77.06) | 0 (−75.98, 75.98) |
| STIR versus 3DGRE | 2.9 (−1.00, 6.81) | 22.3 (−21.65, 66.29) | 24.3 (−42.17, 90.71) | 1.9 (−74.32, 78.21) |
| 3DGRE versus HSM | 4.5 (0.56, 8.37)∗ | 94.1 (50.09, 138.04)∗ | 51.9 (−14.54, 118.34) | 146.0 (69.7, 222.23)∗ |
| 3DGRE versus MATH | 5.5 (1.60, 9.42)∗ | 105.4 (61.38, 149.49)∗ | 41.2 (−25.40, 107.71) | 146.0 (69.7, 222.23)∗ |
| 3DGRE versus FFDM | 11.5 (7.57, 15.38)∗ | 138.0 (94.05, 181.99)∗ | 7.9 (−58.49, 74.38) | 146.0 (69.7, 222.23)∗ |
| STIR versus HSM | 1.6 (−2.22, 5.34) | 71.8 (27.94, 115.56)∗ | 76.2 (9.97, 142.36)∗ | 147.9 (71.93, 223.90)∗ |
| STIR versus MATH | 2.6 (−1.29, 6.50) | 83.1 (39.23, 127.01)∗ | 65.4 (−0.89, 131.74)∗ | 147.9 (71.93, 223.90)∗ |
| STIR versus FFDM | 8.6 (4.68, 12.46)∗ | 115.7 (71.89, 159.51)∗ | 33.2 (−98.40, 33.98) | 147.9 (71.93, 223.90)∗ |
| FFDM versus HSM | 7.0 (3.12, 10.90)∗ | 44.0 (0.14, 87.76)∗ | 44 (−22.24, 110.15) | 0 (−75.98, 75.98) |
| FFDM versus MATH | 6.0 (2.07, 9.86)∗ | 32.6 (−11.31, 76.47) | 33.2 (−33.20, 99.53) | 0 (−75.98, 75.98) |
aHSM, histogram segmentation method; FFDM, full field digital mammography unit; MATH, mathematical algorithm; 3DGRE, 3D gradient echo; STIR, short tau inversion recovery.
bMean (95% confidence interval).
∗Difference between means, significance at P ≤ 0.05 with false discovery rate.