Table 3 Results of blood flow feature statistics of thyroid nodules
| Messy | Central | Peripheral | Focal | No blood flow | |
|---|---|---|---|---|---|
| No. of malignant nodules (n = 75) | 45 | 6 | 13 | 0 | 11 |
| No. of benign nodules (n = 78) | 26 | 0 | 20 | 2 | 30 |
| Malignant rate (%) | 64.3 | 100 | 40.3 | 0 | 27.6 |
| Benign rate (%) | 35.7 | 0 | 59.7 | 100 | 72.4 |