Multimodality Imaging and Functional Lesion Assessment in Intermediate Coronary Stenosis in Chronic Coronary Syndrome

This is a prospective, single center, non-randomized, single-arm, investigator-initiated study evaluating diagnostic accuracy and correlations between functional indices (fractional flow reserve, FFR) and morphometric indices: luminal and qualitative parameters evaluated by OCT including minimal lumen area, plaque stratification into fibrotic, calcific, lipidic plaque, or thin cap fibroatheroma) among patients with chronic coronary syndrome identified with intermediate grade coronary stenosis. The additional objectives include: evaluation of the impact of age, sex, diabetes mellitus, renal dysfunction on the assocation between functional and morphometric indices of coronary stenosis. We hypothesized that in patients with intermediate grade coronary stenosis in chronic coronary syndorme there is a positive correlation between the functional parameters and the morphometric parameters of cornary stenosis.