Table 2 A: Geometric parameters in the left and right carotid arteries. B: Subgroup analysis of the same geometric parameters of all carotid arteries, but dichotomized into presence or absence of an internal carotid artery stenosis ≥10%

A

Left carotid artery

Right carotid artery

P value

Bifurcation angle [°]

48.8 (37.8–69.6)

44.5 (31.1–64.3)

0.037

Tortuosity

1.06 (1.03–1.11)

1.04 (1.02–1.07)

0.005

ICA/CCA-ratio

0.76 (0.63–0.89)

0.73 (0.63–0.83)

0.018

B

< 10% ICA stenosis

≥10% ICA stenosis

P value

Bifurcation angle [°]

46.3 (32.8–65.8)

45.4 (35.4–67.5)

0.015

Tortuosity

1.05 (1.03–1.09)

1.06 (1.03–1.10)

0.001

ICA/CCA-ratio

0.74 (0.67–0.87)

0.73 (0.59–0.87)

0.001