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  • Title: Early response to anti-tumoral treatment in hepatocellular carcinoma--can quantitative contrast-enhanced ultrasound predict outcome?
    Author: Knieling F, Waldner MJ, Goertz RS, Zopf S, Wildner D, Neurath MF, Bernatik T, Strobel D.
    Journal: Ultraschall Med; 2013 Feb; 34(1):38-46. PubMed ID: 23258770.
    Abstract:
    PURPOSE: In order to detect an early response to anti-angiogenic therapy, this study aims at analyzing specific effects of a sorafenib-based regime on intra-tumoral D-CEUS flow parameters of patients with HCC. MATERIALS AND METHODS: Videos of the arterial phase were captured before initiation of a therapy with sorafenib and 1 and 3 months after (n = 9). Patients receiving a non-anti-angiogenic therapy (TACE, n = 10) served as a comparison group. Cross-sectional imaging was performed at the same time points and patients were followed up for 1 year. RESULTS: In the responder group (RE), the absolute (percentage) TTP was 11.28 s ± 2.03 s (1.00) before treatment, 13.60 s ± 1.52 s (1.53 ± 0.08) after one month (p = 0.0405), and 16.17 s ± 2.35 s (1.46 ± 0.07) after three months of treatment (p = 0.0071). The TTP increased significantly in the RE group as early as 1 month after initiation of sorafenib compared to the non-responder group. There were no significant differences in the non-responder group or between the NR and the TACE group at any time point. D-CEUS values from all sorafenib-treated patients showed good accordance with RECICL (response evaluation criteria in cancer of the liver) criteria (R2 = 0.7154, p = 0.0001). CONCLUSIONS: Quantitative CEUS reveals variations of dynamic parameters of blood flow during anti-tumoral therapy in liver cancer patients. Further investigations and clinical trails have to confirm that the TTP is a promising parameter in the prediction of early response to sorafenib-based therapy.
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