Figure 9.

Virtual endoscopy confirmation of plaque stenosis. A: A calcified plaque (arrow) is present in the left anterior descending with more than 90% lumen stenosis in a 51-year-old man presenting with symptoms of chest pain; B: Corresponding virtual intravascular endoscopy shows intraluminal protrusion caused by the plaque, but the luminal stenosis is less than 70%; arrows indicate the intraluminal appearance of calcified plaque. RI: Ramus intermedius; LCX: left circumflex; D1: Diagonal branch.