The incomplete circle of Willis is associated with vulnerable intracranial plaque features and acute ischemic stroke

Table 2 Comparison of culprit plaque features between different types of CoW

Culprit plaque features	Complete A-CoW	Incomplete A-CoW	P	Complete symptomatic side P-CoW	Incomplete symptomatic side P-CoW	P
Stenosis percentage	67.9 ± 13.9	68.8 ± 12.4	0.538	71.1 ± 14.2	67.5 ± 13.2	0.247
Plaque CER	181.8 ± 53.6	222.5 ± 60.1	0.002 ^#	193.7 ± 50.9	192.4 ± 60.6	0.610
Enhancement grade (0/1/2)	4/52/15	0/14/12	0.010 *	0/19/6	4/47/21	0.931
HT₁S [N (%)]	62(87.3%)	21(80.8%)	0.730	18(72.0%)	65(91.6%)	0.013 ^&
Irregularity of plaque [N (%)]	32(45.1%)	12(46.12%)	0.925	12(48.0%)	32(44.5%)	0.760
NWI	83.0 ± 12.5	88.5 ± 9.8	0.018 ^#	83.5 ± 14.3	84.8 ± 11.3	0.895
ARR	0.84 ± 0.26	0.82 ± 0.25	0.890	0.82 ± 0.29	0.84 ± 0.25	0.501
Positive remodeling [N (%)]	14(19.7%)	2(7.7%)	0.345	4(16.0%)	12(16.7%)	0.987

A-CoW anterior circle of Willis, P-CoW posterior circle of Willis, ER contrast enhancement ratio, HT₁S high T₁ signal; ^#Independent samples t-test, *Fisher’s exact test，^&chi-square test

ISSN: 1532-429X