Abstract
Objective To compare the diagnostic value of contrast-enhanced ultrasound (CEUS) and contrast-enhanced helical CT (CECT) for various small focal nodular lesions (≤2 cm) in patients with liver cirrhosis. Methods Eighty-one small hepatic space-occupying lesions in 72 patients with liver cirrhosis were detected with CEUS and CECT, respectively. The diagnostic performance was calculated by histological results obtained from biopsy or surgery, which was considered as the gold standard, Results Fifty-three of the 81 small nodules were hepatocellular carcinoma, 26 were regenerative nodules and 2 were hemangioma. On CEUS, 51 (96.2%,51/53) HCC were hypervascular during arterial phase. On CECT, 41 (77.4%, 41/53) HCC were hypervascular (P 0.05).Conclusions CEUS is superior to CECT in the detection of arterial vascularization for small hepatocellular carcinoma with a diameter ≤2 cm. The ability of CEUS in the characterization of focal nodular lesions in cirrhotic livers is similar to that of CECT. Key words: Ultrasonography ; Microbubbles ; Liver cirrhosis ; Carcinoma, hepatocellular; Tomography, spiral computed
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