Complementary diagnostic value of conventional ultrasound and contrast-enhanced magnetic resonance imaging for post-hepatectomy hepatocellular carcinoma surveillance

Table 5 Detection of vascular invasion

Vascular invasion type	n	US detection (%)	CE-MRI detection (%)	P value
PVTT	16	62.5 (35.4-84.8)	93.8 (69.8-99.8)	0.012
Hepatic vein invasion	5	40.0 (5.3-85.3)	100.0 (47.8-100.0)	0.025
Bile duct invasion	7	42.9 (9.9-81.6)	85.7 (42.1-99.6)	0.035
Inferior vena cava invasion	3	33.3 (0.8-90.6)	100.0 (29.2-100.0)	0.046
Microvascular invasion (imaging)	22	45.5 (24.4-67.8)	86.4 (65.1-97.1)	0.002
Multiple vascular invasion	9	44.4 (13.7-78.8)	88.9 (51.8-99.7)	0.023

Data are presented as detection rate (95% confidence interval).

CE-MRI: Contrast-enhanced magnetic resonance imaging; PVTT: Portal vein tumor thrombus; US: Ultrasound.