Table 2
Collateral flow patterns in patients with ICA occlusions
Group number
1
2
3
Type of symptoms
Hemispheric
Retinal
None
n
24
12
7
Collateral flow via ACoA
63%
75%
86%
χ
2
p=0.5
Collateral flow via PCoA
33%
42%
43%
χ
2
p=0.8