Table 1.
Fibroglandular tissue volumes, total breast volumes, fibroglandular tissue percentages, and breast densities (mean ± standard deviation) measured from patients (n = 43, 66 breasts) imaged with 3D digital mammography and T1-weighted 3D MRI (3.0-T, Philips Achieva TX)
| FGT volume (cm3) | Total breast volume (cm3) | Mammographic breast density or FGT-% (%) | |
|---|---|---|---|
| MRI (N = 66) | |||
| 4-mm slice | 88 ± 60 | 742 ± 402 | 17.3 ± 15.7 |
| 2-mm slice | 87 ± 65 | 755 ± 402 | 17.0 ± 15.9 |
| 0.7-mm slice | 88 ± 60 | 741 ± 400 | 17.1 ± 15.5 |
| Mammography | |||
| MLO (N = 55) | 112 ± 71 | 801 ± 456 | 16.9 ± 8.9 |
| CC (N = 49) | 111 ± 67 | 747 ± 365 | 16.2 ± 9.0 |
| AVG (N = 38) | 107 ± 69 | 740 ± 392 | 16.3 ± 8.0 |
MLO, mediolateral oblique view; CC, craniocaudal view; AVG, averaged measurements; FGT, fibroglandular tissue; FGT-%, fibroglandular tissue percentage