Fig. 1.

Angiographic and Corresponding Optical Coherence Tomography (OCT) Findings in the Left Anterior Descending (LAD) Coronary Artery. (A) Emergent coronary angiography demonstrating LAD thrombosis. (B) Severe stent underexpansion caused by calcified underlying lesion (black arrow). (C) Waist in the non-compliant balloon during high pressure inflation (black arrowhead). (D) Attempt of rotational atherectomy inside the stent using a 1.75 mm burr. The latter failed to progress through the stenosis (Online Movie #1). (E) Procedure using a 3.5 mm x 12 mm intravascular lithotripsy balloon. (F) OCT cross-sectional (top) and longitudinal (bottom) images acquired post-intravascular lithotripsy demonstrate both calcium (yellow arrows) and disorganized struts (white arrowheads). (G, H) Final result after another stent implantation (minimal stent area: 8.2 mm2, average reference lumen area: 9.4 mm2). White asterisk indicates a guidewire shadow . (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)