ACR TI-RADS thyroid nodule calculator
Score a thyroid nodule with the ACR TI-RADS 2017 system. Choose the ultrasound features, add the size, and get the TR level, the FNA and follow-up thresholds, and a report line you can paste straight into your findings.
TR4
Est. malignancy 9.1%
4 points · Moderately suspicious
Report line
How ACR TI-RADS 2017 works
TI-RADS adds points across five ultrasound features. The total decides the risk level and whether fine-needle aspiration (FNA) or follow-up ultrasound is advised, based on the nodule's largest diameter.
| Level | Points | Est. malignancy | FNA | Follow-up US |
|---|---|---|---|---|
| TR1 | 0 | 0.3% | None | None |
| TR2 | 1–2 | 1.5% | None | None |
| TR3 | 3 | 4.8% | ≥2.5 cm | ≥1.5 cm (1, 3, 5 yr) |
| TR4 | 4–6 | 9.1% | ≥1.5 cm | ≥1.0 cm (1, 2, 3, 5 yr) |
| TR5 | ≥7 | ≥35% | ≥1.0 cm | ≥0.5 cm (annually to 5 yr) |
Source: Tessler FN et al., ACR Thyroid Imaging, Reporting and Data System (TI-RADS): White Paper of the ACR TI-RADS Committee, J Am Coll Radiol 2017.
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See the RadSpeed reporting workflow →
· Ultrasound thyroid report template