Table 3 Plaque characteristics ^a NWI =normalized wall index

Vessel Stenosis

< 50% [N(%)]

0

10 (50%)

<0.001

50 - 69% [N(%)]

8 (40%)

3 (15%)

0.16

70 - 99% [N(%)]

12 (60%)

7 (35%)

0.21

AHA Lesion Type VI [N(%)]

16 (80%)

4 (20%)

<0.001

Thin/ruptured fibrous cap [N(%)]

12 (60%)

1 (5%)

<0.001

Intraplaque hemorrhage [N(%)]

9 (45%)

4 (20%)

n.s.

Juxtaluminal hemorrhage / thrombus [N(%)]

6 (30%)

1 (5%)

n.s.

Mean lumen area [mm²]

6.5 ±4.3

10.8 ±7.5

0.05

Mean wall area [mm²]

72.2 ±28.3

64.6 ±20.9

0.17

Mean total vessel area [mm²]

111.1 ±43.4

102.3 ±36.4

0.27

NWI^a

0.88 ±0.07

0.78 ±0.11

0.008

Lipid rich necrotic core [%]

24.5 ±12.9

14.5 ±14

0.08

Calcification [%]

3.6 ±5.2

7.3 ±6.3

0.03

Intraplaque hemorrhage [%]

11.4 ±17

2.1 ±4.5

0.03

MDCTA ^b Characteristics

Plaque Type

Non-calcified [N(%)]

12 (60%)

7 (35%)

n.s.

Mixed [N(%)]

5 (25%)

10 (50%)

n.s.

Calcified [N(%)]

3 (15%)

3 (15%)

n.s.

CT Calcification Volume [mm³]

0.082

0.0735

n.s.