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Figure 4 Pre-intervention, post-intervention, and follow-up angiograms, respectively, are shown at top; slices a b, and c in the post-intervention and follow-up angiograms correspond to the intravascular ultrasound examples at bottom. In slice b, corresponding to the center of the in-stent restenosis, there is heterogeneous stent strut distribution. Note that the three struts marked with the asterisk are farther apart than the others and that this is associated with more neointimal hyperplasia. (From Takebayashi et al. [35].)