Sample size calculation
Initially, we calculated to investigate 84 patients (42 in each arm) to be able to demonstrate a mean absolute difference of 5 percentage units (specifically 90% vs 95%) in strut coverage with an alpha error of 5% (two sided) and a power of 80%. The chosen effect size is 5 percentage units of stent strut coverage as this value has been observed as a clinically relevant threshold to be related with stent-failure outcomes [