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Table 1 CAD-RADS classification

From: An Egyptian study to assess the accuracy and reliability of CAD-RADS CT coronary angiography algorithm in the evaluation of coronary artery disease

CAD-RADS category Degree if maximum coronary stenosis Management
0 0% None
1 0% to 24% None
2 25% to 49% None
3 50% to 69% Functional assessment
4a One or two vessels > 70% Conventional angiography or functional assessment
4b LMT > 50% or three vessels > 70% Conventional angiography
5 Total occlusion Conventional angiography and/or viability assessment
  1. Modifiers are implemented for further illustration; modifier N: nondiagnostic, modifier S: stent, modifier G: graft, modifier V: vulnerability