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Table 3 Optical coherence tomography findings

From: New insights into fibrous cap thickness of vulnerable plaques assessed by optical coherence tomography

 

Group A

FCT ≤ 65 μm (n = 147)

Group B

65 < FCT ≤ 80 μm (n = 84)

Group C

FCT > 80 μm(n = 271)

P value

Thin-cap thickness. μm

56.7 ± 6.3

72.9 ± 5.3 *

142.6 ± 56.0 #△

< 0.001

Mean lipid arc, °

165.4 ± 47.1

158.4 ± 45.5

127.5 ± 42.9 #△

< 0.001

Lipid volume index, °

2299.8 ± 1237.7

2154.2 ± 1279.2

1277.4 ± 888.3 #△

< 0.001

Lipid length, mm

13.8 ± 6.2

13.5 ± 7.0

9.7 ± 5.8 #△

< 0.001

Presence of macrophages, n (%)

140 (95.2)

82 (97.6)

251 (92.6)

0.188

Mean macrophage arc, °

55.8 ± 20.0

57.0 ± 19.6

49.7 ± 23.7 #△

0.004

Macrophage volume index, °

589.3 ± 448.9

561.4 ± 415.8

389.1 ± 309.9 #△

< 0.001

Macrophage length, mm

9.7 ± 6.0

9.4 ± 6.2

7.1 ± 4.7 #△

< 0.001

Microvessel, n (%)

52 (35.4)

36 (42.9)

133 (49.1) â–³

0.026

Cholesterol crystal, n (%)

43 (29.3)

17 (20.2)

85 (31.4) #

0.144

Calcium node, n (%)

0 (0)

3 (3.6) *

6 (2.2)

0.059

Mean calcium arc, °

45.1 ± 36.0

56.0 ± 45.3

56.9 ± 47.0△

0.026

Calcium length, mm

4.4 ± 6.1

5.5 ± 6.1

6.4 ± 7.6 △

0.021

Thrombus, n (%)

124 (84.4)

39 (46.4) *

48 (17.7) #â–³

< 0.001

Plaque rupture, n (%)

96 (65.3)

30 (35.7) *

43 (15.9) #â–³

< 0.001

  1. ∗Significance between FCT ≤ 65 μm group and 65 < FCT ≤ 80 μm group; #significance between 65 < FCT ≤ 80 μm group and FCT>80 μm group; △significance between FCT ≤ 65 μm group and FCT>80 μm group. Values are n(%) or mean ± SD