Reporting and Data Systems (RADS)

By adopting RADS, your practice puts standard terminology in place to improve reporting and clarify communication between radiologists and referring physicians.

What's New in RADS

Access the latest content and resources related to RADS.

BI-RADS® v2025 Manual

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ACR Neck Imaging Reporting and Data System for Magnetic Resonance Imaging v2025

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RADS for Clinical Practice

BI-RADS® (Breast)
See BI-RADS
Bone-RADS™
See Bone-RADS
C-RADS™ (CT Colonography)
See C-RADS
LI-RADS® (Liver)
See LI-RADS
Lung-RADS®
See Lung-RADS
NI-RADS™ (Head and Neck)
See NI-RADS
O-RADS™ (Ovarian)
See O-RADS
PI-RADS® (Prostate)
See PI-RADS
TI-RADS™ (Thyroid)
See TI-RADS
VI-RADS (Vesical)
See VI-RADS

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Works in Progress

RADS works in progress are programs approved by the RADS steering committee because of their potential to significantly improve the standard of care. At present, there is insufficient evidence to support their use in routine practice. If you are interested in joining a works in progress, contact RADS@acr.org.

Soft Tissue-RADS — Soft Tissue Lesions
Brain Tumor-RADS — Brain Tumor
TBI-RADS — Traumatic Brain Injury
KI-RADS — Kidney Masses

What You Should Know About RADS

ACR Reporting and Data Systems (RADS) serve as a standardized framework for characterizing and reporting imaging findings. The primary objective of ACR RADS is twofold: to facilitate effective communication between radiologists and referring physicians and enhance consistency in terminology across reports.

The ACR originated the first RADS in 1992 with the development of BI-RADS. Since then, the RADS moniker has become linked with standardized reporting frameworks and the ACR brand. ACR discourages use of the term RADS except for RADS that have been officially adopted by ACR. However, ACR does not have rights to the term RADS; therefore, other societies and non-affiliated authors have used this term for publications. RADS programs developed by other societies in collaboration with the ACR are described below. Our commitment to quality and ACR standards apply only to RADS developed or endorsed by ACR.

Key features of most RADS include:

Standardized Terminology: RADS employ a lexicon to consistently describe findings.
Risk Assessment Algorithms: Committees develop structured algorithms to measure the risk of malignancy or disease. Risk assessments include terms such as “normal”, “negative”, “benign”, “definitely malignant”, and “high risk.”
Report Organization Guidance: RADS offer guidance on structuring reports.
Data Collection Recommendations: Some RADS systems recommend follow-up data collection for monitoring and improving performance.
Modality Dependence: RADS are tailored to specific imaging modalities.
Comprehensive Tools: ACR provides a suite of tools, including lexicons, risk stratification systems, atlases, report templates, and white papers.

In 2022, the ACR approved a proposal to improve the consistency, transparency, and administrative oversight of ACR RADS. This resulted in the creation of the ACR RADS Steering Committee. Learn more in the JACR article.

PE-RADS — Pulmonary Embolism

No current topics under consideration.

Yes. Please fill out the form to submit your proposal.

The Committees in Quality and Safety want to hear about your experience with published RADS. Help us ensure the effectiveness of the guidelines. Each system listed will be available for a 90-day period.

There are no publications available for comment at this time.

This collection of expert consensus papers are collaborative efforts developed by multi-society multidisciplinary working groups with the goal of improving communication between radiologists and referring physicians.

Program	Collaborating Societies	Title	Year
CAD-RAD	SCCT, ACC, ACR, NASCI	CAD-RADSTM 2.0 2022 Coronary Artery Disease – Reporting and Data System An Expert Consensus Document of the Society of Cardiovascular Computed Tomography (SCCT), the American College of Cardiology (ACC), the American College of Radiology (ACR) and the North America Society of Cardiovascular Imaging (NASCI)	2022
I-TIRADS	International Thyroid Nodule Ultrasound Working Group Steering Committee (European Thyroid Association, the Italian Association of Clinical Endocrinologists, and the Korean Society of Thyroid Radiology), ACR	International Thyroid Imaging Reporting and Data Systems (I-TIRADS) Lexicon – Categories and Descriptors Definitions (publication pending)	2022

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RADS Translations

Translation Disclaimer: All current translations have been vetted by members of the respective RADS International Working Group, who speak these languages.

ACR disclaims liability for any acts or omissions that occur related to an individual's or entity's use of ACR's RADS, including but not limited to, translations of a specific RADS work.

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RADS Translations Request Form

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Questions about RADS?

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Reporting and Data Systems (RADS)

What's New in RADS

RADS for Clinical Practice

BI-RADS® (Breast)

Bone-RADS™

C-RADS™ (CT Colonography)

LI-RADS® (Liver)

Lung-RADS®

NI-RADS™ (Head and Neck)

O-RADS™ (Ovarian)

PI-RADS® (Prostate)

TI-RADS™ (Thyroid)

VI-RADS (Vesical)

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Works in Progress

What You Should Know About RADS

What is RADS?

How did RADS originate?

What are the key features of RADS?

Who oversees RADS?

What RADS are in-progress?

What RADS are under consideration?

Can I propose a new RADS committee?

How do I provide feedback on RADS?

What are the current RADS collaborations?

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RADS Translations

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RADS Translations Request Form

Questions about RADS?

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Focused. Forward. Together.

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RADS for Clinical Practice

BI-RADS® (Breast)

Bone-RADS™

C-RADS™ (CT Colonography)

LI-RADS® (Liver)

Lung-RADS®

NI-RADS™ (Head and Neck)

O-RADS™ (Ovarian)

PI-RADS® (Prostate)

TI-RADS™ (Thyroid)

VI-RADS (Vesical)

What You Should Know About RADS

What is RADS?

How did RADS originate?

What are the key features of RADS?

Who oversees RADS?

What RADS are in-progress?

What RADS are under consideration?

Can I propose a new RADS committee?

How do I provide feedback on RADS?

What are the current RADS collaborations?

Questions about RADS?

Focused. Forward. Together.

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