Effects of Gray-Scale Ultrasonography Immediate Post-Contrast on Characterization of Focal Liver Lesions

Table 1

Diagnostic criteria of focal liver lesions on CEUS features.

Lesion type	CEUS features
Hepatocellular carcinoma	Diffuse enhancement at arterial phase and wash-out at portal venous or late phase
Liver metastases	Peripheral rim with viable intralesional enhancement at arterial phase and wash-out during portal venous or late phase
Hemangioma	Peripheral nodular or rim enhancement at arterial phase with centripetal progression in portal venous and late phase