Figure 3.

Representative Case of Bifurcation PCI by OCT Guidance

(A) Baseline angiography showing severe stenosis (arrow) at the bifurcation lesion of the proximal LAD. (B) Pre-PCI OCT showing narrow carina angle (23°) and short carina tip to branching point (1.5 mm). (C and D) Cross-sectional OCT images demonstrating MLA of 1.88 mm² with a large lipid-rich plaque (190°) and intraluminal thrombus (arrowheads) in proximal MV without the stenosis of SB ostium (diameter of SB ostium: 2.17 mm) (arrow: guidewire of SB). (E) Post-PCI angiography showing successful PCI using SB wire jailing technique in the proximal LAD with severe stenosis and TIMI 3 flow in the SB ostium, demonstrating functional nonsignificance (FFR: 0.82). (F) 3-dimensional stent image and apposition index demonstrating stent optimization. (G) Cross-sectional OCT images demonstrating plaque shift (arrowheads) to SB ostium (arrow: guidewire of SB). FFR = fractional flow reserve; MLA = minimal lumen area; SB = side branch; other abbreviations as in Figures 1 and 2.