The application of low-mechanic contrast-enhanced ultasonography in the diagnosis of metastatic carcinoma of liver

Objective To assess the value of contrast enhanced ultrasonography (CEUS) and real-time low mechanical index technique in the diagnosis of metastatic carcinoma of liver. Methods 86 cases of metastatic carcinoma of liver which were proved with enhanced CT and MRI,were performed CEUS by the administration of SonoVue after examined with conventional ultrasonography (US). The appearances of the lesions in vascular phases were investigated. The new found lesions which sites and size, etc were analysed. Results The new found number of lesions were 109,36 (39.2%) of them lay in subdiaphragm and beside round ligament of liver,the diameter of 44(48%) new found lesions lesser than 1 cm. Their image feature was circular enhancement in the edge of lesions in portal phase. Conclusion CEUS and real-time low mechanical index technique increased diagnostic confidence in the detection and characterization of hepatic metastases compared with standard sonography. Real-time contrast-enhanced sonography is particularly advantageous in detecting small metastases and in the blind area of scanning. May it be benefit for the consequence of patients and direct the therapeutic measures. Key words: Sonographic examination; Bubble agents; Metastatic carcinoma; Liver