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Criteria for FNA or follow-up ultrasound according to ACR TI-RADS(3)
| Add points from all categories to determine TI-RADS level | ||||
|---|---|---|---|---|
| 0 Points | 2 Points | 3 Points | 4 to 6 Points | 7 Points or more |
| TR1 | TR2 | TR3 | TR4 | TR5 |
| Benign | Not suspicious | Mildly suspicious | Moderately suspicious | Highly suspicious |
| No FNA | No FNA | if ≥FNA 2.5 cm | if ≥FNA 1.5 cm | if FNA ≥1 cm |
| Follow-up if ≥1.5 cm | Follow-up if ≥1 cm | Follow-up if ≥0.5 cm | ||
Five sonographic categories and their corresponding points for ACR TI-RADS(3)
| Composition (choose 1) | Echogenicity (choose 1) | Shape (choose 1) | Margins (choose 1) | Echogenic Foci (choose all that apply) | |||||
|---|---|---|---|---|---|---|---|---|---|
| Cystic or almost completely cystic | 0 | Anechoic | 0 | Wider than tall | 0 | Smooth | 0 | None or large comettail artifacts | 0 |
| Spongiform | 0 | Hyperechoic isoechoic or | 1 | Taller than wide | 3 | Ill-defined | 0 | Macrocalcifications | 1 |
| Mixed cystic and solid | 1 | Hypoechoic | 2 | Lobulated or irregular | 2 | Peripheral (rim) calcifications | 2 | ||
| Solid or almost completely solid | 2 | Very hypoechoic | 3 | Extra thyroidal extension | 3 | Punctate echogenic foci | 3 | ||