Shuo-Hui Yang1, Jiang Lin1, Fang Lu2, Zhi-Hong Han3, Cai-Xia Fu4, Peng Lv1, Hao Liu1, Dong-Mei Gao5. 1. Department of Radiology, Zhongshan Hospital, Shanghai Medical College, Fudan University, and Shanghai Institute of Medical Imaging, Shanghai, China. 2. Department of Radiology, Shuguang Hosipital, Shanghai University of Traditional Chinese Medicine, Shanghai, China. 3. Department of Pathology, Shuguang Hosipital, Shanghai University of Traditional Chinese Medicine, Shanghai, China. 4. Siemens Shenzhen Magnetic Resonance Ltd., Shenzhen, China. 5. Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Shanghai, China.
Abstract
PURPOSE: To investigate the effectiveness of intravoxel incoherent motion (IVIM) in the assessment of the therapeutic efficacy of sorafenib in an orthotopic hepatocellular carcinoma (HCC) xenograft model. MATERIALS AND METHODS: Thirty-five HCC nude mouse models were established. IVIM was performed on a 1.5T MR scanner at baseline (n = 5) and serially at 7, 14, and 21 days after sorafenib treatment. The apparent diffusion coefficient (ADCtotal ), true diffusion coefficient (D), pseudodiffusion coefficient (D*), and perfusion fraction (f) at these timepoints were measured and compared between the treated (n = 15) and control group (n = 15). Differences in measurements among different timepoints were evaluated. Correlations between IVIM parameters and histologic features including necrotic fraction (NF) and microvessel density (MVD) were analyzed. RESULTS: Compared to the control group, ADCtotal and D were significantly higher at each timepoint (P = 0.009), while f significantly decreased at 7 days (P = 0.009) and increased at 21 days (P = 0.028) in the treated group. Serial measurements in the treated group showed that both ADCtotal and D increased significantly at 7, 14, and 21 days compared to baseline (P < 0.05), while f significantly declined at 7 days (P = 0.016) and increased at 21 days (P = 0.009). Significant correlations were found between ADCtotal and NF (r = 0.811, P < 0.001), D and NF (r = 0.838, P < 0.001), and between f and NF (r = 0.528, P = 0.017) in the treated group. CONCLUSION: IVIM may provide useful biomarkers for evaluating the therapeutic effects of sorafenib on HCC. LEVEL OF EVIDENCE: 1 J. Magn. Reson. Imaging 2017;45:270-280.
PURPOSE: To investigate the effectiveness of intravoxel incoherent motion (IVIM) in the assessment of the therapeutic efficacy of sorafenib in an orthotopic hepatocellular carcinoma (HCC) xenograft model. MATERIALS AND METHODS: Thirty-five HCC nude mouse models were established. IVIM was performed on a 1.5T MR scanner at baseline (n = 5) and serially at 7, 14, and 21 days after sorafenib treatment. The apparent diffusion coefficient (ADCtotal ), true diffusion coefficient (D), pseudodiffusion coefficient (D*), and perfusion fraction (f) at these timepoints were measured and compared between the treated (n = 15) and control group (n = 15). Differences in measurements among different timepoints were evaluated. Correlations between IVIM parameters and histologic features including necrotic fraction (NF) and microvessel density (MVD) were analyzed. RESULTS: Compared to the control group, ADCtotal and D were significantly higher at each timepoint (P = 0.009), while f significantly decreased at 7 days (P = 0.009) and increased at 21 days (P = 0.028) in the treated group. Serial measurements in the treated group showed that both ADCtotal and D increased significantly at 7, 14, and 21 days compared to baseline (P < 0.05), while f significantly declined at 7 days (P = 0.016) and increased at 21 days (P = 0.009). Significant correlations were found between ADCtotal and NF (r = 0.811, P < 0.001), D and NF (r = 0.838, P < 0.001), and between f and NF (r = 0.528, P = 0.017) in the treated group. CONCLUSION: IVIM may provide useful biomarkers for evaluating the therapeutic effects of sorafenib on HCC. LEVEL OF EVIDENCE: 1 J. Magn. Reson. Imaging 2017;45:270-280.
Authors: Tianying Zheng; Hanyu Jiang; Yi Wei; Zixing Huang; Jie Chen; Ting Duan; Bin Song Journal: Chin J Cancer Res Date: 2018-06 Impact factor: 5.087