Table 2 Computed tomography angiography characteristics

Minimum diameter, millimeter, mean +/- SD

6.57 +/- 1.00

6.74 +/- 0.97

0.92

Maximum diameter, millimeter, mean +/- SD

7.29 +/- 0.96

7.55 +/- 1.14

0.79

Tortuosity index, mean +/- SD

1.20 +/- 0.11

1.18 +/- 0.11

0.82

Plaque burden

None

Non-calcified

Mixt

Calcified

32 (69.6)

3 (6.5)

7 (15.2)

4 (8.7)

25 (54.3)

6 (13.0)

7 (15.2)

8 (17.4))

0.19

Total number of angles measured

114

121

Number of angles per patient, mean +/- SD

2.46 +/- 0.55

2.58 +/- 0.62

0.25

Sum of angles per patient, degrees, mean +/- SD

396 +/- 57

384 +/- 59

0.27

Severe angulation

0

0

Moderate angulation

1 (0.9)

2 (1.7)

Mild angulation

113 (99.1)

119 (98.3)

1