Inclusion Criteria:  Patient over 18 years old Patient affiliated to the National Health Insurance System Patient for whom a coronary angioplasty procedure is performed using the Shockwave Medical C2 Coronary Lithotripsy System For indications of stent malexpansions, stent malexpansion must be defined by: a) angiography: stent malexpansion >30% (QCA and/or stent magnification) b) endocoronary OCT/IVUS imaging with MSA (Minimal Stent Area) <4.5 mm2 or a ratio of MSA/MLA on reference segment<0.8 Patient willing to participate in the registry  Exclusion Criteria:  Patient under 18 years of age Pregnant or breastfeeding patient Patient refusing to participate in the study or unable to give informed consent (patient under guardianship, curatorship or legal guardianship)