The present study sought to explore the predictive value of radial wall strain (RWS, derived solely from angiograms) for coronary artery lesion progression compared with lesion vulnerability assessed by optical coherence tomography (OCT). The lesion progression at 1 year was defined as an increase of ≥20% in diameter stenosis based on quantitative coronary angiography (QCA) evaluation.
Age ≥18 years
Acute myocardial infarction ≤ 45 days
Planned coronary angiography examination or potential interventional treatment
The presence of at least 1 non-flow-restricting lesion (visually estimated diameter stenosis: 30%-80%; QFR > 0.80) in any non-infarct related artery with RVD ≥2.5 mm by visual assessment
Cardiogenic shock
Pregnant or woman of child-bearing potential
Life expectancy less than 1 year for non-cardiac causes
Unable to tolerate contrast agents or anticoagulant/antiplatelet therapy