Sizes, Arteries

Anterior Circulation

Artery Sizes
M2 2.4±0.4
M1 3.1±0.4
ICA terminus 3.6±0.4
Cavernous ICA 5.0±0.6

Mean diameter, origin, mm[1]

Posterior Circulation

Artery Sizes (proximal) Sizes (distal)
Vertebral 3.9±0.8 2.8±0.6
Basilar 3.6±0.6 3.1±0.5

Mean diameter, mm[2]

  1. Cerebrovascular geometry in the anterior circulation: an analysis of diameter, length and the vessel taper | Journal of NeuroInterventional Surgery ↩︎

  2. Dimensions of the posterior cerebral circulation: an analysis based on advanced non-invasive imaging | Journal of NeuroInterventional Surgery ↩︎