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Mechanical Model Analysis for Quantitative Evaluation of Liver Fibrosis Based on Ultrasound Tissue Elasticity Imaging

机译:基于超声组织弹性成像定量评估肝纤维化的力学模型分析

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摘要

Precise evaluation of the stage of chronic hepatitis C with respect to fibrosis has become an important issue to prevent the occurrence of cirrhosis and to initiate appropriate therapeutic intervention such as viral eradication using interferon. Ultrasound tissue elasticity imaging, i.e., elastography can visualize tissue hardness/softness, and its clinical usefulness has been studied to detect and evaluate tumors. We have recently reported that the texture of elasticity image changes as fibrosis progresses. To evaluate fibrosis progression quantitatively on the basis of ultrasound tissue elasticity imaging, we introduced a mechanical model of fibrosis progression and simulated the process by which hepatic fibrosis affects elasticity images and compared the results with those clinical data analysis. As a result, it was confirmed that even in diffuse diseases like chronic hepatitis, the patterns of elasticity images are related to fibrous structural changes caused by hepatic disease and can be used to derive features for quantitative evaluation of fibrosis stage.
机译:准确评估慢性丙型肝炎与纤维化有关的阶段,已成为防止肝硬化发生并启动适当的治疗干预措施(例如使用干扰素消除病毒)的重要问题。超声组织弹性成像,即弹性成像可以可视化组织的硬度/柔软度,并且已经研究了其临床实用性以检测和评估肿瘤。我们最近报道说,随着纤维化的发展,弹性图像的质地也会发生变化。为了在超声组织弹性成像的基础上定量评估纤维化进程,我们引入了纤维化进程的机械模型,并模拟了肝纤维化影响弹性图像的过程,并将结果与​​那些临床数据分析进行了比较。结果,证实了即使在诸如慢性肝炎的弥散性疾病中,弹性图像的图案也与由肝病引起的纤维结构变化有关,并且可以用于推导用于定量评估纤维化阶段的特征。

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  • 来源
    《Japanese journal of applied physics》 |2012年第7issue2期|p.07GF11.1-07GF11.8|共8页
  • 作者单位

    Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan;

    Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan;

    Advanced Biomedical Engineering Research Unit, Kyoto University, Kyoto 606-8501, Japan;

    Hitachi Aloka Medical Ltd., Kashiwa, Chiba 227-0804, Japan;

    Department of Gastroenterology and Hepatology, Kinki University School of Medicine, Osakasayama, Osaka 589-8511, Japan;

    Department of Internal Medicine, National Hospital Organization, Minami-Wakayama Medical Center, Tanabe, Wakayama 646-8558, Japan;

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