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Table 2: Attenuation measurements on the different series with mean values, SDs, upper/lower 95% CIs of rater 1, and results from Wilcoxon tests between residual clots and perfused vessels in the 10 patients with residual clots
Hounsfield Attenuation (Mean)
CT DEw VNC IM
Clots 58.88 ± 10.98 50.50 ± 10.08 53.72 ± 9.42 16.02 ± 12.07
    Lower/upper 95% CI of mean 55.05/70.66 43.29/57.71 46.98/60.46 7.39/24.65
Vessels 43.35 ± 5.54 49.37 ± 7.44 41.64 ± 7.87 10.88 ± 11.35
    Lower/upper 95% CI of mean 39.5/47.72 42.37/53.71 33.17/44.79 10.55/15.13
P values (Wilcoxon) .0091^{^a} .4316 .0020^{^a} .8457
↵a Significant difference.

	Hounsfield Attenuation (Mean)
	CT	DEw	VNC	IM
Clots	58.88 ± 10.98	50.50 ± 10.08	53.72 ± 9.42	16.02 ± 12.07
Lower/upper 95% CI of mean	55.05/70.66	43.29/57.71	46.98/60.46	7.39/24.65
Vessels	43.35 ± 5.54	49.37 ± 7.44	41.64 ± 7.87	10.88 ± 11.35
Lower/upper 95% CI of mean	39.5/47.72	42.37/53.71	33.17/44.79	10.55/15.13
P values (Wilcoxon)	.0091^{^a}	.4316	.0020^{^a}	.8457