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Figure 3 A representative example of a patient with plaque compositional changes between two-year and four-year follow-up. Top row shows cross-sectional vessel image at (A) post-procedure, (B) four months, (C) one year, (D) two years, and (E) four years. Red line indicates lumen. Light blue line indicates stent. Green line indicates media. Dense blue line indicates adventitia. Bottom row shows cross-sectional echogenicity images. Hyperechogenic areas are colored green. Hypoechogenic areas are colored red. (A’) Percent plaque behind stent hypoechogenicity was 84.0% post-procedure, (B’) 85.3% at four months, (C’) 88.4% at one year, (D’) 84.2% at two years, and (E’) 74.8% at four years.
