title: Liver nodule and US medium contrast agents: past and future.
authors.forename: Giampiero
authors.initials: G
authors.lastname: Francica
authors.forename: Antonio
authors.initials: A
authors.lastname: Giorgio
mesh_terms: D003287:Contrast Media; D006801:Humans; D008103:Liver Cirrhosis / Q000000981:diagnostic imaging*; D018615:Ultrasonography, Doppler, Color / Q000379:methods*
chemical_list: D003287:Contrast Media