Click on image to view larger version.

Figure 4 Stenting a left anterior descending coronary artery lesion. Upper left panel: Baseline angiogram shows a severe stenosis at the trifurcation of a diagonal and large septal branch. Upper right panel: After rotational atherectomy and cutting balloon dilation, a 3.5-mm Tristar stent was deployed at 16 atm. There is no residual stenosis, but the minimum stent diameter was 2.8 mm by quantitative coronary angiography. Lower panel: Intravascular ultrasound (IVUS) imaging just after stenting. Intravascular ultrasound revealed a major and minor diameter of 3.2 mm by 2.4 mm, which was 63% of the manufacturer’s expected stent diameter. The predicted stent area at 16 atm was 11.4 mm². The actual minimum stent cross-sectional area measured by IVUS was 6.0 mm², which was 53% of the manufacturer’s expected stent area. MLA = minimum lumen area; MLD = minimum lumen diameter.