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Feature weight of TIRADS
| Feature | Weights | |
|---|---|---|
| Feature reference weight (Wi) | Malignant weight (score) | |
| Composition | ||
| Solid | 1.6 | 0 |
| Mixed | 0.2 | 0 |
| Cystic | − 2 | |
| Margins | ||
| Ill-defined margins | 3.7 | 3 |
| Microlobulated | 5.5 | 6 |
| Shape | ||
| Irregular | 6 | 6 |
| Calcification | ||
| Micro-calcification | 6 | 6 |
| Macro-calcification | 1.9 | 2 |
| No-calcification | 0.4 | 1 |
| Taller than wide | ||
| <= 1 | 0.5 | 1 |
| > 1 | 6 | 6 |
| Blood flow | ||
| Messy | 1.8 | 1 |
| Central | 6 | 2 |
| Peripheral | 0.7 | 0.5 |
| Focal | 0 | − 2 |
| No blood flow | 0.4 | 0 |
