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CAD-RADS: Pushing the Limits
Arzu Canan1, Praveen Ranganath1, Harold Goerne1
1From the Department of Radiology, Division of Cardiothoracic Imaging, UT Southwestern Medical Center, Dallas, Tex (A.C., P. Ranganath, H.G., S.A., P. Rajiah); Imaging and Diagnosis Center, Guadalajara, Mexico (H.G.); and Department of Radiology, University of Chicago Medical Center, Chicago, Ill (L.L.).
Insights
The Coronary Artery Disease Reporting and Data System (CAD-RADS) standardizes coronary CT angiography interpretation to reduce variability. This study addresses ambiguities in CAD-RADS guidelines for improved patient care and data consistency.
Area of Science:
- Cardiovascular Imaging
- Radiology Reporting Standards
Background:
- Coronary CT angiography (CCTA) is a primary tool for diagnosing coronary artery disease (CAD) in low-to-intermediate risk patients.
- Significant variability exists in CCTA reporting and interpretation by referring physicians.
- The CAD Reporting and Data System (CAD-RADS) was developed to standardize CCTA interpretation and improve clinical care.
Purpose of the Study:
- To standardize the classification of CAD findings from CCTA reports.
- To enhance communication between interpreting radiologists and referring physicians.
- To provide consistent data for quality improvement, research, and education.
Main Methods:
- Discussion of CAD-RADS categories and modifiers.
- Identification and analysis of complex or ambiguous scenarios within CAD-RADS guidelines.
- Development of recommendations for managing these ambiguous scenarios.
Main Results:
- CAD-RADS aims to decrease inter-reader variability and improve clinician communication.
- The system facilitates collaborative patient care decisions.
- Consistent data generation supports auditing, research, and educational initiatives.
Conclusions:
- While CAD-RADS provides a valuable framework, ambiguities exist in specific clinical scenarios.
- Addressing these ambiguities with clear recommendations is crucial for optimal patient management.
- Further refinement of CAD-RADS guidelines will enhance its utility in clinical practice.
Abstract:
Coronary CT angiography is now established as the first-line diagnostic imaging test to exclude coronary artery disease (CAD) in the population at low to intermediate risk. Wide variability exists in both the reporting of coronary CT angiography and the interpretation of these reports by referring physicians. The CAD Reporting and Data System (CAD-RADS) is sponsored by multiple societies and is a collaborative effort to provide standard classification of CAD, which is then integrated into patient clinical care. The main goals of the CAD-RADS are to decrease variability among readers; enhance communication between interpreting and referring clinicians, allowing collaborative determination of the best course of patient care; and generate consistent data for auditing, data mining, quality improvement, research, and education. There are several scenarios in which the CAD-RADS guidelines are ambiguous or do not provide definite recommendations for further management of CAD. The authors discuss the CAD-RADS categories and modifiers, highlight a variety of complex or ambiguous scenarios, and provide recommendations for managing these scenarios. Online supplemental material is available for this article. ©RSNA, 2020 See discussion on this article by Aviram and Wolak.
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