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ACR TIRADS CALCULATOR FOR THYROID NODULES

Composition

(Choose 1)

points
0
0
1
2
2
Echogenicity

(Choose 1)

points
0
1
2
3
1
Shape

(Choose 1)

points
0
3
Margin

(Choose 1)

points
0
0
2
3
0
Echogenic foci

(Choose all that apply)

points
0
1
2
3

More TIRADS resources

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This is a simplified calculator for TI-RADS scoring of thyroid nodules on ultrasound based on the ACR White paper. It has a sleek UI mimicking the ACR chart for ease of use and includes recommendations for each score category.

ACR TIRADS CHART

ACR TI RADS chart guidelines High Resolution image

 

ACR TIRADS chart
ACR TIRADS chart

TIRADS

TIRADS is a 5 point scoring system for thyroid nodules on ultrasound, developed by the American College of Radiology ( hence also termed as ACR- TIRADS). It helps to decide if a thyroid nodule is benign or malignant, combining multiple features on ultrasound.

How to calculate TIRADS score for thyroid nodules?

 

Online TIRADS calculator for thyroid nodules
Online TIRADS calculator for thyroid nodules

TIRADS classification table

ACR TIRADS classification

Category Points Suspicion Risk of Malignancy Guideline
TR1 0 Benign 0.3% No FNA
TR2 2 Not suspicious 1.5% No FNA
TR3 3 Mildly suspicious 4.8 If >2.5 cm: FNA

If >1.5 cm:Follow up at 1,3 ,5 years

TR4 4-6 Moderately suspicious 9.1 If >1.5cm: FNA

If >1 cm:Follow up at 1,3 ,5 years

TR5 7 or more Highly suspicious 35 If >1 cm: FNA

If >0.5 cm follow annually for 5 years

FNA- Fine Needle Aspiration.

Caveats for thyroid ultrasound

  • If rim calcifications obscure the nodule completely, choose composition to be “solid” and echogenicity to be “isoechoic”.
  • If the margin cannot be determined, choose “ill-defined margin”.
  • If echogenicity cannot be determined, choose “isoechoic”.
  • If composition cannot be determined, choose “solid”.

ACR TIRADS Explained

For a more detailed guide with examples, refer to the dedicated article here:

TIRADS ACR : What radiologists need to know!

More TIRADS resources

Disclaimer: The author makes no claims of the accuracy of the information contained herein; this information is for educational purposes only and is not a substitute for clinical judgment. This calculator is based upon the American College of Radiology (ACR) TIRADS classification but is not officially endorsed by the ACR.

 

Translated version is available in multiple languages, including Spanish language.

Para acceder a la versión en español de la calculadora TIRADS, use la opción de traducción en la esquina superior derecha.

Instructions on how to use the translate option on RadioGyan.com
Instructions on how to use the translate option on RadioGyan.com

For more radiology resources, check out RadioGyan homepage!

Developed and maintained by Aniket Udare

Last Updated on

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Radiologist at RadioGyan.com
I have completed medical school from KEM Hospital Mumbai and radiology residency from Tata Memorial Hospital, Mumbai. I am a board-certified radiologist in India.

I have also completed fellowships in body imaging from Mumbai and Ottawa and am currently pursuing a fellowship in cross-section imaging at McMaster University, Canada.

I have a passion for teaching and my area of interest is body imaging. I started the website, RadioGyan to share radiology resources and cases to help residents and radiologists.

You can read my most recent publications on: PubMed and Google Scholar

Dr. Amar Udare, MD
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