Complete

Anterior part incomplete, %

Posterior part incomplete, %

Zero or hypoplastic Acom

ACA from ipsilateral ICA

ACA from contralateral ICA

Zero or hypoplastic Pcom on one side

Zero or hypoplastic Pcom on both sides

Dominance of Pcom on one side

Dominance of Pcom on both sides

NA

8.3

9.4

100

0

31.3

18.8

37.5

9.4

ME

22.2

21.8

57.1

42.9

26.5

21.8

18.7

6.3