Figure 4: Images of Echocardiography During Procedure

During PCU a “cavitation bubble cloud” is visible as a hyperechogenic zone <b>(red arrow)</b>. After PCU, the improvement of the bioprosthesis opening is confirmed thanks to the echocardiography <b>(green arrow)</b>. The images are realized during diastasis (closed aortic valve). See Supplemental Video 1. Ao = aorta; other abbreviations as in Figure 2.