TI-RADS Calculator

The Thyroid Imaging Reporting and Data System (TI-RADS) is a standardized scoring system developed to classify thyroid nodules based on ultrasound features. TI-RADS helps assess the risk of malignancy and guides decisions about whether a fine-needle aspiration (FNA) biopsy is necessary. It improves consistency in nodule evaluation and assists clinicians in managing thyroid nodules efficiently.

Why Use

  • Standardized Evaluation: Provides a consistent scoring system for assessing thyroid nodules based on ultrasound features.
  • Malignancy Risk Assessment: Categorizes nodules by malignancy risk, helping prioritize high-risk cases.
  • FNA Guidance: Recommends when to perform or defer FNA, reducing unnecessary biopsies.
  • Clinical Decision Support: Enhances decision-making for nodule management and monitoring.

Thyroid Imaging Reporting and Data System (TI-RADS) Calculator












TI-RADS Score:

Description:

TI-RADS is a system used to assess the risk of malignancy in thyroid nodules based on ultrasound characteristics. The TI-RADS score helps to guide clinical management, such as whether the nodule needs to be biopsied or monitored with follow-up imaging. It is based on five ultrasound features: composition, echogenicity, shape, margin, and echogenic foci.

Formula Explanation:

The TI-RADS score is calculated by summing up the individual scores for each of the five ultrasound features. Each feature is scored based on its appearance and risk for malignancy, with the total score helping to categorize the nodule into one of several risk categories:

  • TI-RADS 1: Benign (low risk, no biopsy needed).
  • TI-RADS 2: Not suspicious (very low risk, no biopsy needed).
  • TI-RADS 3: Mildly suspicious (low risk, follow-up imaging recommended).
  • TI-RADS 4: Moderately suspicious (moderate risk, biopsy may be needed).
  • TI-RADS 5: Highly suspicious (high risk, biopsy recommended).

Interpretation:

  • TI-RADS 1: Completely benign nodule, no malignancy risk.
  • TI-RADS 2: Benign or very low malignancy risk, follow-up may be optional.
  • TI-RADS 3: Likely benign, but further imaging or follow-up is recommended.
  • TI-RADS 4: Moderately suspicious for malignancy, biopsy may be required.
  • TI-RADS 5: Highly suspicious for malignancy, biopsy strongly recommended.

Usage:

The TI-RADS score is primarily used in clinical settings for assessing thyroid nodules based on ultrasound findings. It helps healthcare providers determine the likelihood of malignancy and decide whether a biopsy is needed or if further monitoring is required. The higher the TI-RADS score, the higher the suspicion of malignancy, and the need for intervention increases.

TI-RADS assigns scores based on ultrasound features and stratifies nodules into the following categories:

  • TI-RADS 1: Benign (Risk < 2%)
  • TI-RADS 2: Not suspicious (Risk < 2%)
  • TI-RADS 3: Mildly suspicious (Risk 2-5%)
  • TI-RADS 4: Moderately suspicious (Risk 6-20%)
  • TI-RADS 5: Highly suspicious (Risk > 20%

FNA Recommendations:

  • Based on TI-RADS category and nodule size, FNA may be advised for nodules above certain thresholds (e.g., ≥ 1 cm for TI-RADS 5).