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Figure 1 Arterial remodeling patterns. The remodeling index (RI) before intervention was calculated as vessel area (VA) at the target lesion site divided by the averaged VA of reference segments. Patterns of remodeling were classified into three categories: 1) positive remodeling was defined as RI >1.1; 2) intermediate remodeling as RI 0.9 to 1.1; and 3) negative remodeling as RI <0.9. (A) Positive remodeling (RI = 1.30). (B) Negative remodeling (RI = 0.65).
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