Fig. 2.
Qualitative optical coherence tomography analysis. For definitions, refer in the text. 1) Homogeneous pattern of ISR. 2) Heterogeneous patterns subsequently subdivided in three subtypes: 2a) layered pattern; 2b) patchy pattern; and 2c) speckled pattern. 3) Neo-atherosclerosis and its main features: 3a) lipid plaque; 3b) calcium deposit; 3c) thin-cap fibro-atheroma; and 3d) detail of macrophage presence in a lipid plaque. 4) Miscellaneous ISR characteristics: 4a) microvessels; 4b) peri-strut low intensity areas; 4c) overlapping stents; and 4d) malapposed struts.