title: Feasibility study of an ultrasound contrast agent (levovist) in color Doppler imaging of liver neoplasms.
abstract: The purpose of this study was to determine the efficacy of using an ultrasound contrast agent (levovist) to enhance the color Doppler imaging of liver neoplasms. Thirty patients with hepatic tumors were enrolled in this study. After intravenous administration of levovist, the color Doppler signals of normal hepatic vessels were enhanced. In various hepatic tumors, the different patterns of tumor vascularity were observed, which had not been demonstrated in conventional non-contrast color Doppler imaging. In 11 of 16 patients with hepatocarcinoma, additional color Doppler signals were observed in the central part of the tumors. On the contrary, 3 patients with metastatic liver lesions the enhanced color Doppler signals appear only at the peripheral of tumors. A typical rim-like color enhancement was seen in 2 of the 3 cases. In six patients with hepatic hemangiomas contrast-enhanced color Doppler imaging demonstrated the blood vessels at the margin of the neoplasms. Contrast-enhanced color Doppler imaging improves the visualization of the hepatic neoplasm vascularity. This technique holds great promise for detecting small liver tumors and differentiating hepatic neoplasms.
authors.affiliation: Department of Diagnostic Ultrasound, Peking Union Medical College Hospital, CAMS & PUMC, Beijing 100730.
authors.forename: Y
authors.initials: Y
authors.lastname: Jiang
authors.forename: Q
authors.initials: Q
authors.lastname: Dai
authors.forename: J
authors.initials: J
authors.lastname: Liu
authors.forename: J
authors.initials: J
authors.lastname: Zhang
authors.forename: X
authors.initials: X
authors.lastname: Chang
authors.forename: S
authors.initials: S
authors.lastname: Cai
authors.forename: L
authors.initials: L
authors.lastname: Tan
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D006528:Carcinoma, Hepatocellular / Q000000981:diagnostic imaging*; D003287:Contrast Media / Q000008:administration & dosage; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D007089:Image Enhancement; D007275:Injections, Intravenous; D008113:Liver Neoplasms / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D011134:Polysaccharides; D018615:Ultrasonography, Doppler, Color
chemical_list: D003287:Contrast Media; D011134:Polysaccharides; C059891:SHU 508