Fig 1.
Definition of 3D-OCT bifurcation type.
Parallel type: The proximal SB course is concealed behind the carina when viewed perpendicular to the vessel wall. Perpendicular type: The visible elliptical SB opening is not concealed by the carina when viewed perpendicular to the vessel wall. Blue arrows, direction of 3D image view. 3D, three-dimensional; SB, side branch, MV, main vessel.
Fig 2.
OCT, optical coherence tomography; OFDI, optical frequency domain imaging; PCI, percutaneous coronary intervention; SB, side branch; 3D, three-dimensional, QCA, quantitative coronary angiography.
Table 1.
Patient characteristics.
Table 2.
Lesion and procedure characteristics.
Fig 3.
Receiver operating characteristic curve analysis to predict perpendicular type coronary bifurcation.
AUC, area under the curve; BA, bifurcation angle.
Fig 4.
Cumulative curve analysis for the distal bifurcation angle.
The vertical dotted line indicates the cut-off angle of 51° for prediction of perpendicular type bifurcation. BA, bifurcation angle.
Fig 5.
Representative 3D-OCT bifurcation types.
Parallel type: Jailed stent struts at the SB ostium can be attached towards the SB wall by KBI in parallel type bifurcations in which the distal bifurcation angle is 50°. Perpendicular type: Jailed stent struts at the SB ostium cannot be sufficiently dilated to fit the elliptical SB ostial rim in perpendicular type bifurcations with a distal bifurcation angle of 106°. OCT, optical coherence tomography, SB, side branch, KBI, kissing balloon inflation, QCA, quantitative coronary angiography.