Table 1.

Inclusion and exclusion criteria for patient selection

Inclusion criteria

Angiographic evidence of in-stent restenosis ( > 50% diameter stenosis)

Stent length ≥ 18 mm

2 recordings of the examined coronary artery segment from different angiographic projections ≥ 25° apart

Stent type: bare-metal stent (Multilink Vision, PRO-Kinetic Energy, Integrity), drug-eluting stent (Xience-V, Orsiro, resolute integrity)

Exclusion criteria

Stent implanted in a coronary artery bypass graft

Unsuitable images (e.g. foreshortening of the target coronary artery segment, overlapping of other segments)

Bioresorbable vascular scaffold (BVS)

Poor image quality (unable to follow luminal border)