Fig. 2

Description of OCT methodology. A In-scaffold area (white line) and diameter calculation immediately after Absorb BRS implantation. Note inclusion of scaffold struts (box-like structures) into the measured area. B scaffold marker identified with typical shadow (red arrow). C lumen area (green line) and diameter calculation at five-year follow-up. Note complete absence of residual scaffold struts. D longitudinal view of vessel segment assessed by OCT. After proximal and distal stent marker identification (red arrows), in-scaffold and lumen areas and diameters have been calculated in 1 mm cuts mm (represented by blue triangles). Proximal and distal vessel reference areas and diameters have been calculated as the mean values between 2 and 5 mm (represented by blue lines with arrows). The same methodology has been applied at baseline and five-year follow-up. BRS bioresorbable scaffold, OCT optical coherence tomography