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(a) Pre- and (b) post-deployment geometries of the aortic root of Case 1. (c) full and (d) local views of the deformed the aortic root and balloon deployment indicates annulus tearing under the left coronary ostium due to dislodgement of calcification into the vulnerable part of the aortic sinus. Adopted from Wang et al. Biomech Model Mechanobiol (2015) 14:29–38
