2.6. Quantitative Coronary Analysis (QCA)
restenosis, stenosis
RESTENOSIS, STENOSIS
QCA was analyzed using Cardiovascular Angiographic Analysis System (CAAS) II software version 5.0 (Pie Medical Imaging, Maastricht, the Netherlands). Analysis was performed by two cardiologists separately. At followup, restenosis was defined as a QCA diameter stenosis ≥50%. The analysis was performed independently by two physicians blinded to the group, and the results were averaged.