C-RADS®

Quality assurance for colon cancer CT screening

ACR CT Colonography Reporting & Data System (C-RADS)

Current Release

C-RADS v2023 is available on the web.

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C-RADS is a quality assurance tool designed to standardize approach to the reporting of colorectal and extracolonic findings in patients.

Beyond clarity of communication to referring physicians, this scheme also provides the foundation to better evaluate results in clinical research and aids in the assessment of quality metrics and patient outcomes. Separate stratifications were developed for colorectal and extracolonic findings.


Further reading:

C-RADS v2023 Summary of Changes

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Licensing RADS content

License Information

Reporting and Data Systems (RADS) by the American College of Radiology are licensed under a Creative Commons Attribution-NoDerivatives 4.0 International License. Permissions beyond the scope of this license may be available by using our permission form. Contact us: rads@acr.org

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