Figure 2

OCT imaging of the pre-stent intracoronary: (A) before segmentation; (B) after thresholding, vascular tissue, OCT catheter, and small particles within the lumen (red arrow) marked as tissue class (green); (C) segmentation of the OCT catheter (blue); (D) accurate segmentation of the vascular tissue (green). Legend: C = catheter, VT = vascular tissue.