How to Use TI-RADS Calculator
The TI-RADS Calculator is built for the specific workflow behind this calculation, not as a generic number form. Use the left-side inputs to enter the values named in the labels, then read the primary result and supporting details in the right-side result panel.
- Prepare the value - Choose the nodule shape category.
- Enter the measurement - Select the margin, echogenicity, calcification type, and taller-than-wide status.
- Check the calculation - Let the calculator add the assigned points.
- Read the output - Read the TR category and total point count together.
The TI-RADS Calculator updates in the browser, so you can revise one field and immediately see how the answer changes. If the result looks surprising, first check units, decimal placement, and whether the input represents the same definition used by the formula.
Formula & Theory - TI-RADS Calculator
The TI-RADS Calculator uses this calculation rule:
TI-RADS category = sum of ultrasound feature pointsThe TI-RADS Calculator turns descriptive ultrasound findings into a structured point total. Each suspicious feature adds points, and the final sum is mapped to TR1 through TR5. This page uses a simplified point table suitable for front-end triage and teaching, so it should be reconciled with the exact guideline used locally.
Because this is a front-end calculator, the arithmetic happens locally in JavaScript. That makes the tool useful for quick review, teaching, and documentation support, but it also means the result is only as reliable as the values typed into the form. Pay special attention to denominators, unit conventions, and scoring definitions.
Assumptions and Limits
The TI-RADS Calculator follows a practical simplified implementation suitable for a web calculator. It does not validate source documents, replace formal scoring manuals, or adjust for every local protocol. For clinical calculators, confirm the output with qualified clinical judgment. For school or publication metrics, compare the result with the governing policy or database definition.
Use Cases for TI-RADS Calculator
The TI-RADS Calculator is most useful when you need a transparent calculation with visible inputs and a repeatable result. Common scenarios include:
- Structured thyroid ultrasound reporting - Turn selected ultrasound descriptors into a consistent TR category draft.
- Teaching how suspicious features accumulate - Show how calcification, echogenicity, shape, and aspect ratio add points.
- Second-pass review of nodule descriptions - Check whether the written description matches the implied score.
- Patient discussion aids after imaging - Use the category prompt to explain why follow-up may be recommended.
Use the result as a starting point for review. When the number will be copied into a note, report, worksheet, or decision record, keep the original measurements nearby so the calculation can be checked later.