Table 3

In-Stent Segment Quantitative IVUS Analysis

ZES (n = 53)PES (n = 52)
Entire Stent Segment AnalysisBaselineFollow-Upp ValueBaselineFollow-Upp Value
Vessel VI12.7 ± 3.612.9 ± 3.5NS13.6 ± 4.114.3 ± 4.3<0.01
Delta vessel VI0.3 ± 1.00.8 ± 1.0
Lumen VI6.6 ± 1.85.6 ± 1.7<0.017.2 ± 2.06.6 ± 2.0<0.01
Delta lumen VI–0.9 ± 0.9–0.6 ± 0.9
Peristent plaque VI6.1 ± 2.36.2 ± 2.1NS6.4 ± 2.67.1 ± 2.7<0.01
Delta peristent plaque VI0.2 ± 0.80.7 ± 0.8
Minimum lumen area, mm25.5 ± 1.54.4 ± 1.6<0.016.2 ± 1.95.3 ± 1.9<0.01
Late area loss, mm21.1 ± 1.00.9 ± 1.1
Subsegment Analysisp Value
Focal vessel remodeling, %5.025.0<0.05
% vessel VI change at maximum remodeling site13.7 ± 6.818.2 ± 9.2<0.05
% plaque VI change at maximum remodeling site28.3 ± 20.347.2 ± 29.8<0.01

IVUS = intravascular ultrasound; VI = volume index (mm3/mm); other abbreviations as in Table 1.

  • p < 0.05 for ZES follow-up vs. PES follow-up,

  • p < 0.05 for ZES baseline vs. PES baseline,

  • p value for ZES vs. PES.