Diagnostic Performance of Frequency-Domain Optical Coherence Tomography to Predict Functionally Significant Left Main Coronary Artery Stenosis

Figure 1

Example of proximal left main (LM) stenosis. (a) Angiographic view showing a proximal LM stenosis. The measurements of the LM length and the lesion length are also presented (double arrows). (b). Optical coherence tomography (FD-OCT) cross-sectional images of the LM with measured lumen dimensions. B1: reference lumen area (RLA); B2: minimum lumen area (MLA). (c) Longitudinal FD-OCT reconstruction of the LM showing the location of measurements (B1 and B2) and the measurements of the total LM length and the lesion length (double arrows).