Table 3.

The I/C ratio and diameter of the occluded internal carotid artery.

	(Mean) I/C ratio			Diameter
	Success (N = 22)	Failure (N = 10)	p-value	Success (N = 22)	Failure (N = 10)	p-value
Occlusive part	0.89 ± 0.06	0.77 ± 0.07	<0.001‡	/	/	/
Non-occlusive part	0.89 ± 0.08	0.72 ± 0.28	0.095	/	/	/
C1	0.93 ± 0.12	0.79 ± 0.15	0.009†	0.44 ± 0.10	0.43 ± 0.09	0.646
C2	0.93 ± 0.13	0.70 ± 0.16	<0.001‡	0.42 ± 0.09	0.36 ± 0.10	0.090
C3	0.88 ± 0.09	0.83 ± 0.10	0.177	0.39 ± 0.12	0.42 ± 0.09	0.516
C4	0.89 ± 0.10	0.82 ± 0.22	0.190	0.35 ± 0.10	0.36 ± 0.09	0.864
C5	0.87 ± 0.08	0.75 ± 0.28	0.236	0.28 ± 0.08	0.25 ± 0.07	0.303
C6	0.85 ± 0.12	0.68 ± 0.29	0.098	0.24 ± 0.06	0.20 ± 0.06	0.053
C7	0.93 ± 0.11	0.78 ± 0.34	0.188	0.23 ± 0.07	0.18 ± 0.05	0.032*
ACA	1.00 ± 0.63	1.02 ± 0.76	0.917	0.16 ± 0.05	0.17 ± 0.07	0.746
MCA	0.87 ± 0.34	0.82 ± 0.28	0.748	0.22 ± 0.04	0.21 ± 0.06	0.477

Values are mean ± SD.

^*p < 0.05;

^†p < 0.01;

^‡p < 0.001;

I/C ratio, ipsilateral-to-contralateral diameter ratio; C1, cervical segment; C2, petrous segment; C3, lacerum segment; C4, cavernous segment; C5, clinoidal segment; C6, ophthalmic segment; C7, communicating segment; ACA, anterior cerebral artery; MCA, middle cerebral artery.