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Quantitative therapy response assessment by volumetric iodine-uptake measurement: initial experience in patients with advanced hepatocellular carcinoma treated with sorafenib

Objectives - To investigate the volumetric iodine-uptake (VIU) changes by dual-energy CT (DECT) in assessing the response to sorafenib treated hepatocellular carcinoma (HCC) patients, compared with AASLD (American Association for the Study of Liver Diseases) and Choi criteria. - Materials and method...

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Main Authors: Dai, Xu (Author) , Schlemmer, Heinz-Peter (Author) , Schmidt, Bernhard (Author) , Höh, Karolin Julia (Author) , Xu, Ke (Author) , Ganten, Tom M. (Author) , Ganten, Maria-Katharina (Author)
Format: Article (Journal)
Language:English
Published: 2013
In: European journal of radiology
Year: 2012, Volume: 82, Issue: 2, Pages: 327-334
ISSN:1872-7727
DOI:10.1016/j.ejrad.2012.11.013
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.ejrad.2012.11.013
Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0720048X1200558X
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Author Notes:Xu Dai, Heinz-Peter Schlemmer, Bernhard Schmidt, Karolin Höh, Ke Xu, Tom M. Ganten, Maria-Katharina Ganten
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Summary:Objectives - To investigate the volumetric iodine-uptake (VIU) changes by dual-energy CT (DECT) in assessing the response to sorafenib treated hepatocellular carcinoma (HCC) patients, compared with AASLD (American Association for the Study of Liver Diseases) and Choi criteria. - Materials and methods - Fifteen patients with HCC receiving sorafenib, monitored with contrast-enhanced DECT scans at baseline and a minimum of one follow-up (8-12 weeks) were retrospectively evaluated. 30 target lesions in total were analyzed for tumor response according to VIU and adapted Choi criteria and compared with the standard AASLD. - Results - According to AASLD criteria, 67% target lesions showed disease control: partial response (PR) in 3% and stable disease (SD) in 63%. 33% lesions progressed (PD). Disease control rate presented by VIU (60%) was similar to AASLD (67%) and Choi (63%) (P>0.05). For disease control group, change in mean VIU was from 149.5±338.3mg to 108.5±284.1mg (decreased 19.1±42.9%); and for progressive disease group, change in mean VIU was from 163.7±346.7mg to 263.9±537.2mg (increased 230.5±253.1%). Compared to AASLD (PR, 3%), VIU and Choi presented more PR (33% and 30%, respectively) in disease control group (P<0.05). VIU has moderate consistency with both AASLD (kappa=0.714; P<0.005) and Choi (kappa=0.648; P<0.005), while VIU showed a better consistency and correlation with AASLD (kappa=0.714; P<0.005; r=0.666, P<0.005) than Choi with AASLD (kappa=0.634, P<0.005; r=0.102, P=0.296). - Conclusion - VIU measurements by DECT can evaluate the disease control consistent with the current standard AASLD. Measurements are semi-automatic and therefore easy and robust to apply. As VIU reflects vital tumor burden in HCC, it is likely to be an optimal tumor response biomarker in HCC.
Item Description:Available online: 11 December 2012
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Physical Description:Online Resource
ISSN:1872-7727
DOI:10.1016/j.ejrad.2012.11.013

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