title: Evaluation of efficacy of transcatheter arterial chemoembolization for hepatocellular carcinoma using magnetic resonance diffusion-weighted imaging.
abstract: Although the efficacy of transcatheter arterial chemoembolization (TACE) has been recommended as first-line therapy for nonsurgical patients with hepatocellular carcinoma (HCC), it is difficult to accurately predict the efficacy of TACE. Therefore, this study evaluated the efficacy of TACE for HCC using magnetic resonance (MR) diffusion-weighted imaging (DWI). A total of 84 HCC patients who received initial TACE were selected and assigned to the stable group (n=39) and the progressive group (n=45). Before TACE treatment, a contrast-enhanced MR scan and DWI (b=300, 600, and 800 s/mm2) were performed on all patients. The modified response evaluation criteria in solid tumors were used for evaluation of tumor response. Receiver operating characteristic curve was employed to predict the value of apparent diffusion coefficient (ADC) for TACE efficacy. The ADC values of HCC patients in the progressive group were higher than those in the stable group at differentb-values (b=300, 600, and 800 s/mm2) before TACE treatment. The area under the curve of ADC values withb-values of 300, 600, and 800 s/mm2were 0.693, 0.724, and 0.746; the threshold values were 1.94×10-3mm2/s, 1.28×10-3mm2/s, and 1.20×10-3mm2/s; the sensitivity values were 55.6%, 77.8%, and 73.3%; and the specificity values were 82.1%, 61.5%, and 71.8%, respectively. Our findings indicate that the ADC values of MR-DWI may accurately predict the efficacy of TACE in the treatment of HCC patients.
authors.affiliation: Department of Radiology, Jinhua People's Hospital, Jinhua.
authors.forename: Xiao-Ming
authors.initials: XM
authors.lastname: Wu
authors.affiliation: Department of Radiology, Jinhua People's Hospital, Jinhua.
authors.forename: Jun-Feng
authors.initials: JF
authors.lastname: Wang
authors.affiliation: Department of Radiology, Lishui Municipal Center Hospital, Lishui, People's Republic of China.
authors.forename: Jian-Song
authors.initials: JS
authors.lastname: Ji
authors.affiliation: Department of Radiology, Jinhua People's Hospital, Jinhua.
authors.forename: Ming-Gao
authors.initials: MG
authors.lastname: Chen
authors.affiliation: Department of Radiology, Jinhua People's Hospital, Jinhua.
authors.forename: Jian-Gang
authors.initials: JG
authors.lastname: Song
keywords: apparent diffusion coefficient; diffusion-weighted imaging; hepatocellular carcinoma; magnetic resonance imaging; transcatheter arterial chemoembolization