Table 2 Mean coronary angiography and IVUS findings of the lesions

Quantitative coronary angiography

 Culprit vessel

  Left anterior descending artery (%)

84 (50.0)

24 (51.1)

60 (49.6)

  Right coronary artery (%)

48 (28.6)

15 (31.9)

33 (27.3)

  Left circumflex artery (%)

31 (18.5)

7 (14.9)

24 (19.8)

  Others

5 (3.0)

1 (2.1)

4 (3.3)

 Total length of the lesions, mm^a

23.9 [16.1, 32.1]

24.1 [15.9, 36.8]

23.6 [17.7, 32.0]

IVUS findings

 Quantitative parameters

  MLA, mm^{2 a}

2.1 [1.8, 2.7]

2.1 [1.8, 2.6]

2.1 [1.7, 2.7]

  EEM at MLA site, mm^{2 a}

12.3 [9.5, 16.3]

12.0 [8.4, 17.8]

12.4 [9.5, 15.9]

  Area of stenosis at the MLA, %^a

81.8 [75.5, 87.3]

78.6 [74.3, 88.5]

81.9 [76.0, 87.2]

  Percent atheroma volume, %^a

60.8 [53.9, 67.5]

61.9 [54.3, 67.1]

60.1 [53.6, 68.4]

  Total atheroma volume, mm^{3 a}

194.8 [139.9, 287.0]

206.9 [140.3, 320.9]

188.7 [136.1, 264.1]

  Total atheroma volume_normalized, mm^{3 a}

205.9 [146.6, 264.2]

216.4 [137.4, 278.3]

205.2 [147.2, 253.9]

  Remodeling index^a

1.1 [1.0, 1.2]

1.1 [1.0, 1.2]

1.1 [1.0, 1.2]

 Qualitative assessment and parameters

  Culprit plaque type

   Soft

63 (37.5)

19 (40.4)

44 (36.4)

   Fibrous

45 (26.8)

8 (17.0))

37 (30.6)

   Calcified

29 (17.3)

10 (21.3)

19 (15.7)

   Mixed

31 (18.5)

10 (21.3)

21 (17.4)

  Plaque rupture (%)

39 (23.2)

14 (29.8)

25 (20.7)

  Thrombosis on IVUS (%)

18 (10.7)

6 (12.8)

12 (9.9)

  Calcified nodule (%)

21 (12.5)

6 (12.8)

15 (12.4)

  Ultrasound attenuation (%)

103 (61.3)

31 (66.0)

72 (59.5)

  Maximum attenuation angle, ° ^a

137 [108, 178]

141 [108, 187]

136 [110, 172]

  Calcified lesion (%)

103 (61.3)

34 (72.3)

69 (57.0)

  Maximum calcium angle, ° ^a

115 [84, 228]

144 [88, 276]

107 [80, 156]

  Maximum calcium arch ≥ 130° (%)

45 (26.8)

19 (40.4)

26 (21.5)

  Maximum calcium arch ≥ 180° (%)

32 (19.1)

16 (34.0)

16 (13.2)