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Figure 3 Ostial Stenosis of the Left Main Coronary Artery

Axial cross-section (A) and 3-dimensional reconstructed image in anterosuperior orientation (B) showing a tight stenosis (arrow) at the ostium of the left coronary artery. Please note that the left ostium is reimplanted at an anterior 12 o'clock position so that it is localized between the great arteries. (C) Corresponding invasive aortography showing the tight stenosis of the left coronary artery ostium. Abbreviations as in Figure 1.