Table 4

Rates of sensitivity and specificity of arterial hypervascularisation, portal vein washout in the late venous phase and typical vascular pattern for the diagnosis of 34 HCCs detected in 55 patients with 1–2 cm nodules

	Arterial hypervascularisation			Portal/vein washout			Typical vascular pattern
	CE-US	CT	MRI	CE-US	CT	MRI	CE-US	CT	MRI
Sensitivity (%)	68	65	66	38	53	59	26	44	44
Specificity (%)	76	81	62	95	100	95	100	100	100
PPV (%)	82	85	72	93	100	95	100	100	100
NPV (%)	59	59	54	49	57	61	46	52	54
LR+	2.8	3.4	1.7	8.0	∞	12.5	∞	∞	∞
LR–	0.42	0.44	0.56	0.6	0.47	0.43	0.73	0.56	0.56
Accuracy (%)	71	71	64	65	71	74	55	65	66

CE-US, contrast-enhanced ultrasound; HCC, hepatocellular carcinoma; LR, likelihood ratio; NPV, negative predictive value; PPV, positive predictive value.