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Figure 3 Relationship of stent lumen cross-sectional area (CSA) between manufacturer’s stated values and in vivo intravascular ultrasound (IVUS) measurements. The manufacturer’s expected areas were determined from a combination of two kinds of stents (Guidant/Tristar or AVE-Medtronic/S670), four stent sizes (2.5 mm, 3.0 mm, 3.5 mm or 4.0 mm) and two inflation pressures (14 or 16 atm).