Figure 2: Optimization of under-expanded stent deployment in RCA. (a and c) Obvious under-expanded stent in severe calcification vessel (white arrow) with severe mid RCA disease. (b) Calcified lesion behind the stent resistant to noncompliant balloon inflation (arrowhead). (d) PostELCA run with contrast. (e) No waste on balloon after ELCA (arrowhead). (f) Final result. RCA: Right coronary artery, ELCA: Excimer laser coronary atherectomy