The BI-RADS classification and the synthesised measures
| BI-RADS* | Elasticity score | VTQm | VTQc | Synthesised score | |
|---|---|---|---|---|---|
| Mean (SD) | Mean (SD) | Mean (SD) | Benign (n, %) | Malignant (n, %) | |
| 3 (n=293) | 1.98 (0.64) | 2.64 (0.51) | 2.86 (0.55) | 207 (85.2) | 86 (53.4) |
| 4A (n=46) | 2.84 (0.68) | 2.85 (0.76) | 3.02 (0.76) | 25 (10.3) | 21 (13.1) |
| 4B (n=23) | 3.91 (0.29) | 3.24 (0.86) | 3.48 (0.78) | 4 (1.6) | 19 (11.8) |
| 4C (n=16) | 3.71 (0.61) | 2.90 (0.70) | 3.34 (0.84) | 5 (2.1) | 11 (6.8) |
| 5 (n=26) | 4.00 (0.81) | 3.31 (0.62) | 3.71 (0.75) | 2 (0.8) | 24 (14.9) |
BI-RADS, the Breast Imaging Reporting and Data System; N, number of counts; VTQc, virtual touch quantification at the centre of a lesion; VTQm, virtual touch quantification at the margin of a lesion.
*In the BI-RADS, number 3 refers to probably benign, number 4 refers to suspicious malignancy and number 5 refers to highly suggestive of malignancy. In the 4 category, a subclassification is used: (1) 4A: low suspicious for malignancy; (2) 4B: intermediate suspicious for malignancy; (3) 4C: moderate concern, but not classic for malignancy.