Table 2 BIRADS categories of breast ultrasound and strain ratios of strain elastography according to histology results
Histology | Benign | Malignant | Sum | ||||
|---|---|---|---|---|---|---|---|
Variables | Number | Percent | Number | Percent | Number | Percent | |
US-BIRADS (N = 172) | B1 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 |
B2 | 1 | 0.7 | 0 | 0.0 | 1 | 0.6 | |
B3 | 64 | 45.4 | 0 | 0.0 | 64 | 37.0 | |
B4a | 65 | 46.1 | 1 | 3.2 | 66 | 38.2 | |
B4b | 9 | 6.4 | 5 | 16.1 | 14 | 8.1 | |
B4c | 2 | 1.4 | 13 | 41.9 | 15 | 8.7 | |
B5 | 0 | 0.0 | 12 | 38.7 | 12 | 6.9 | |
Mean (SD) | Median (Range) | Mean (SD) | Median (Range) | Mean (SD) | Median (Range) | ||
STE (N = 128) | Strain ratio (kPa) | 2.69 (1.19) | 2.44 (1.02–7.13) | 4.74 (2.41) | 4.28 (1.91–10.16) | 2.94 (1.53) | 2.58 (1.02–10.16) |