Table 2:

Anatomic configuration

A1 ConfigurationAneurysmsControls (n = 159)
AcomAa (n = 105)Non-AcomA (n = 123)
Symmetric32 (31%)109 (89%)122 (77%)
Dominant42 (40%)10 (8%)21 (13%)
Complete31 (29%)4 (3%)16 (10%)
Dominant + Complete73 (69%)14 (11%)37 (23%)
  • a All cases observed had aneurysms fed by the dominant vessel.