Table 3 Gray-scale IVUS findings (n = 61)

IVUS lesion length (mm)

28.95 (19.40–39.62)

25.20 (19.70–31.90)

0.299

 Lumen CSA (mm²)

8.65 (7.68–9.89)

9.86 (6.86–11.50)

0.328

 EEM CSA (mm²)

13.21 (12.03–15.76)

15.65 (11.68–18.31)

0.124

 Plaque burden (%)

33.28 (27.37–38.11)

36.11 (28.37–38.74)

0.585

 Lumen CSA (mm²)

5.95 ± 1.93

5.36 ± 1.65

0.212

 EEM CSA (mm²)

9.21 (6.13–11.49)

8.48 (6.43–11.56)

0.828

 Plaque burden (%)

31.40 (26.93–37.27)

36.92 (33–39.91)

0.027

 Average/Mean Lumen CSA (mm²)

7.32 (6.39–8.80)

7.30 (5.60–8.59)

0.725

 Average/Mean EEM CSA (mm²)

10.95 (9.61–13.31)

12.36 (8.87–14.93)

0.213

 Lesion minimum luminal diameter (mm)

1.56 (1.5–1.63)

1.57 (1.51–1.68)

0.436

 Lesion maximum luminal diameter (mm)

2.0 (1.82–2.22)

2.06 (1.82–2.25)

0.670

 Lesion Lumen CSA (mm²)

2.43 (2.15–2.71)

2.45 (2.11–2.87)

0.363

 Lesion EEM CSA (mm²)

13.91 ± 2.94

15.71 ± 3.73

0.041

 Lesion (P + M) CSA (mm²)

11.45 ± 2.85

13.13 ± 3.66

0.050

 Lesion lumen area stenosis (%)

67.30 (60.39–71.18)

66.14 (55.12–71.57)

0.658

 Lesion plaque burden (%)

81.65 (79.98–84.01)

82.42 (80.68–85.77)

0.306

 Plaque volume (mm³)

94.3 (72.22–120.22)

108.3 (94.10–120.20)

0.194

 Remodeling index

1.21 (1.06–1.42)

1.22 (1.03–1.50)

0.946