Table 3.

Vessel definition score

	GE-MRV		FE-MRV		Paired t-test P-value
	Mean observer score ± SD	Interobserver agreement AC1 statistic	Mean observer score ± SD	Interobserver agreement AC1 statistic
Inferior vena cava	2.53 ± 1.03	0.538	3.68 ± 0.44	0.824	< 0.001
Superior vena cava	2.53 ± 0.97	0.671	3.25 ± 0.75	0.751	0.020
Innominate vein	2.45 ± 1.09	0.867	3.35 ± 0.63	0.756	0.003
Internal jugular vein	2.73 ± 1.08	0.537	3.60 ± 0.53	0.642	0.003
Subclavian vein	2.50 ± 1.09	0.601	3.35 ± 0.67	0.753	0.006
Superior pulmonary vein	2.25 ± 0.85	0.545	2.83 ± 0.44	0.576	0.017
Inferior pulmonary vein	2.13 ± 0.83	0.415	2.80 ± 0.66	0.435	0.007
Tributaries of the superior and inferior pulmonary veins	2.05 ± 0.78	0.615	2.55 ± 0.46	0.634	0.008
Azygos vein	2.08 ± 0.96	0.476	2.95 ± 0.74	0.485	0.009
Superior mesenteric vein	2.40 ± 0.91	0.674	3.15 ± 0.88	0.679	0.014
Inferior mesenteric vein	2.00 ± 0.90	0.479	2.60 ± 0.81	0.409	0.005
Tributaries of the superior mesenteric vein	2.00 ± 0.87	0.545	2.68 ± 0.78	0.415	0.030
Splenic vein	2.05 ± 0.89	0.675	2.93 ± 0.61	0.489	0.001
Middle hepatic vein	2.18 ± 0.88	0.280	3.13 ± 0.54	0.437	< 0.001
Portal vein	2.50 ± 0.90	0.609	3.48 ± 0.57	0.817	< 0.001
Common iliac vein	2.45 ± 1.01	0.602	3.20 ± 1.15	0.754	0.038
Internal iliac vein	2.05 ± 1.03	0.479	2.58 ± 1.00	0.341	0.15
External iliac vein	2.28 ± 1.20	0.672	2.88 ± 1.25	0.549	0.17

AC1 first order agreement coefficient, FE-MRV ferumoxytol-enhanced magnetic resonance venography, GE-MRV gadofosveset-enhanced magnetic resonance venography, SD standard deviation