title: Assessment of the ablated area after radiofrequency ablation by contrast-enhanced sonography; comparison with virtual sonography with magnetic navigation.
abstract: This study investigated whether contrast-enhanced sonography can accurately predict the ablated area by radiofrequency ablation using virtual sonography by computed tomography as a gold standard. Thirty-one hepatocellular carcinoma nodules were treated by radiofrequency ablation and then examined. The defect of contrast-enhanced sonography (puncture direction: r=.868, P<.0001; perpendicular direction; r=.925, P<.0001) was closely correlated with the unenhanced area of virtual sonography. Contrast-enhanced sonography can be used for early and accurate prediction of the ablated area and is helpful for assessing local control of radiofrequency ablation.
authors.affiliation: Second Department of Internal Medicine, Faculty of Medicine, Tottori University, Yonago, Tottori 683-8504, Japan. masakoda@grape.med.tottori-u.ac.jp
authors.forename: Masahiko
authors.initials: M
authors.lastname: Koda
authors.forename: Mari
authors.initials: M
authors.lastname: Mandai
authors.forename: Tomomitu
authors.initials: T
authors.lastname: Matono
authors.forename: Takaaki
authors.initials: T
authors.lastname: Sugihara
authors.forename: Takakazu
authors.initials: T
authors.lastname: Nagahara
authors.forename: Masaru
authors.initials: M
authors.lastname: Ueki
authors.forename: Kenji
authors.initials: K
authors.lastname: Ohyama
authors.forename: Keiko
authors.initials: K
authors.lastname: Hosho
authors.forename: Yoshikazu
authors.initials: Y
authors.lastname: Murawaki
mesh_terms: D006528:Carcinoma, Hepatocellular / Q000000981:diagnostic imaging* / Q000601:surgery*; D003287:Contrast Media; D006801:Humans; D008113:Liver Neoplasms / Q000000981:diagnostic imaging* / Q000601:surgery*; D008280:Magnetics; D008297:Male; D008875:Middle Aged; D011134:Polysaccharides; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D025321:Surgery, Computer-Assisted / Q000379:methods*; D016896:Treatment Outcome; D014463:Ultrasonography / Q000379:methods*
chemical_list: D003287:Contrast Media; D011134:Polysaccharides; C059891:SHU 508