Fig. 4

Coronary angiogram and intravascular ultrasound images of the restenotic lesion of left circumflex artery. B Pre-stent placement coronary angiogram of left circumflex artery. e–h Intravascular ultrasound images of left circumflex artery before the first percutaneous coronary intervention. (B₁) Post-stent placement coronary angiogram of left circumflex artery. (e₁–h₁) Intravascular ultrasound images of left circumflex artery after the first percutaneous coronary intervention. (B₂) Angiogram 3 months after the in-stent restenosis was treated with paclitaxel-coated balloon showing no obvious in-stent restenosis in left circumflex artery. (e₂–h₂) A total of 3 months after the in-stent restenosis of left circumflex artery was treated with paclitaxel-coated balloon; intravascular ultrasound images showing mild intimal hyperplasia inside the stent. Whereas, on intravascular ultrasound, significant progression of the lesion was observed at the edge and distal end of the stent