Coronary CT Angiography Reporting and Data System

This Expert Consensus Document proposes a standardized protocol for reporting of coronary computed tomography (CT) angiography results. The following are several key points:

1. Other medical imaging fields (e.g., screening mammography, screening lung CT) have developed standardized reporting protocols.
2. Standardized protocols permit data collection for study registries, standardize image interpretation, and provide clinical recommendations that can guide patient management following results.
3. This document proposes a reporting system called CAD-RADS (Coronary Artery Disease Reporting and Data System) specifically for coronary CT angiography. The goals of this system are to improve communications between reading and referring providers, streamline research, and improve patient care.
4. For patients with stable chest pain, proposed categories range from 0 (no plaque) to 5 (total occlusion). Patients with 50% left main or severe three-vessel CAD are recommended to undergo invasive angiography.
5. In patients with acute chest pain, negative initial troponin, negative/nondiagnostic electrocardiogram (ECG), and considered to be at low to intermediate risk of acute coronary syndrome (ACS), the proposed categories also range from 0 (normal) to 5 (total occlusion). For a stenosis x

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