TI-RADS Calculator

Calculate ACR TI-RADS score for thyroid nodule assessment and malignancy risk evaluation

Thyroid Nodule Assessment

TI-RADS Assessment Results

0
Total Points
TR1
TI-RADS Category

TI-RADS Categories

TR1 (0 points)Benign - 0.3% risk
TR2 (2 points)Not suspicious - 1.5% risk
TR3 (3 points)Mildly suspicious - 4.8% risk
TR4 (4-6 points)Moderately suspicious - 9.1% risk
TR5 (≥7 points)Highly suspicious - 35% risk

High-Risk Features

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Taller-than-wide shape

Strong indicator of malignancy

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Punctate echogenic foci

Suspicious calcification pattern

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Very hypoechoic

Darker than strap muscles

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Extrathyroidal extension

Invasion beyond thyroid capsule

Size Thresholds

TR3 (Mildly suspicious)
• FNA if ≥2.5 cm
• Follow-up if ≥1.5 cm
TR4 (Moderately suspicious)
• FNA if ≥1.5 cm
• Follow-up if ≥1.0 cm
TR5 (Highly suspicious)
• FNA if ≥1.0 cm
• Follow-up if ≥0.5 cm

Understanding TI-RADS Assessment

What is TI-RADS?

The Thyroid Imaging Reporting and Data System (TI-RADS) is a standardized scoring system developed by the American College of Radiology (ACR) to assess thyroid nodules found during ultrasound examination. It helps determine the risk of malignancy and guides management decisions.

How It Works

TI-RADS evaluates five ultrasound features of thyroid nodules, assigning points based on suspicious characteristics. The total score determines the TI-RADS category (TR1-TR5) and provides recommendations for fine needle aspiration (FNA) and follow-up.

Clinical Applications

  • Standardizes thyroid nodule reporting
  • Guides FNA biopsy decisions
  • Determines follow-up schedules
  • Reduces unnecessary biopsies
  • Improves patient management

Important Considerations

  • Multiple nodules should be assessed individually
  • Size measurements are crucial for management
  • Clinical correlation is always necessary

Medical Disclaimer

Important: This TI-RADS calculator is for educational purposes only and should not replace professional medical evaluation.

Thyroid nodule assessment requires proper ultrasound interpretation by qualified healthcare professionals. Always consult with an endocrinologist or radiologist for proper evaluation and management of thyroid nodules.

The TI-RADS score is one tool among many in thyroid nodule evaluation. Clinical history, physical examination, and other factors must also be considered in patient management.