Value of contrast-enhanced ultrasound in the differential diagnosis of focal liver lesions

Objective:To investigate the value of contrast-enhanced ultrasound(CEUS) in the differential diagnosis of focal liver lesions(FLL).Methods:The perfusion patterns of 52 patients with 57 lesions were observed with the pulse inversion harmonic(PIH) imaging technique.The perfusion quantity of FLL was analyzed according to the acoustic quantified parameters on the TIC.Results:37 malignant tumors and 20 benign lesions were compared.The differences of the parameters(beginning enhancing time、peak time、peak intensity、beginning diminish time、delay intensity、the D-value of the peak and the delayed phase intensity) all had statistical significance(P0.05).When the D-value of the peak and the delay intensity of the lesions was 7dB,the correspondence rate in diagnosing the benign lesions and the malignant tumors reached 91% and 90%.Conclusion:The D-value of the peak and the delay intensity in contrast-enhanced ultrasound have Important value in differentiating the benign and the malignant lesions of liver.