Evaluation on the Effectiveness and Safety of RuiXin-CoronaryAI for Diagnosis of Coronary Artery Stenosis

Inclusion Criteria:

1. layer thickness of CCTA images should be less than 1mm, image quality should be up toDICOM 3.0 standards;
2. vessels should be clearly developed, contrast medium ought to be well filled, theaverage of CT value of aortic root cavity should be between 325-600HU in CCTA image;
3. remodeling of vessels should be intact, including coronary artery and branches,without missed or inaccurate slices;
4. CCTA image should be obtained from single- or dual-source computed tomography (CT)scanners with a minimum of 64 detector rows.

Exclusion Criteria:

1. CCTA image is of poor quality due to motion artifact, severe calcification, metalcoverage, noise, poor contrast medium injection and other variables influencing thediagnosis of stenosis;
2. previous percutaneous coronary intervention (PCI) or coronary artery bypass grafting (CABG);
3. anomalous origin of coronary artery;
4. other non-atherosclerosis-related coronary diseases like coronary artery fistula,aneurysm, coronary artery ectasia, arteritis coronaria, etc.;
5. repeated enrollment;
6. other conditions not suitable for enrollment.