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Figure 2 Culprit lesion in a patient with acute coronary syndrome (ACS), demonstrating hemodynamically significant proximal right coronary artery (RCA) stenosis. (A) Curved thin slice (5 mm) maximum intensity projection of the long axis of the RCA demonstrates significant proximal luminal narrowing in the presence of non-calcified plaque (distal dashed line). (B) Proximal cross-sectional reference demonstrates a normal lumen of the RCA (area: 17 mm²). (C) Cross-section through the lesion demonstrates the non-calcified plaque (low density) (area: 27 mm²). Small residual lumen (area: 5 mm², degree of stenosis: 71%) and positive remodeling index (RI: 1.59). (D) Invasive selective coronary angiography demonstrates a significant stenosis of the proximal RCA (73%).

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