The risk of coronary obstruction after transcatheter aortic valve implantation (TAVI) is high in cases where a deflected failing aortic valve leaflet is positioned in close proximity to a coronary ostium1,2. Bioprosthetic or native Aortic Scallop Intentional Laceration to prevent Iatrogenic Coronary Artery obstruction (BASILICA) is a novel technique in which splitting of such an aortic valve leaflet can reduce that risk3. Although multidetector computed tomography (MDCT) and aortic root angiography are the primary imaging modalities to evaluate the anatomic relationship between the aortic valve and the coronary ostia to determine that risk, no systematic classification exists ...
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