Non-gated chest computed tomography (CT) is not typically used to diagnose coronary artery disease (CAD). This project aimed to establish the limits of interpretability for non-gated chest CT scans in patients presenting with chest pain or suspected obstructive CAD. It compared the diagnostic accuracies of two luminal stenosis interpretative approaches: a 50 % obstructive CAD threshold and a patient-level stenosis method. The latter categorized chest CT into four groups based on the most severe…