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Simulation study on acoustic streaming and convective cooling in blood vessels during a high-intensity focused ultrasound thermal ablation

机译:高强度聚焦超声热消融过程中血管声流与对流冷却的仿真研究

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摘要

This study investigates the influence of blood vessels on temperature distribution during high-intensity focused ultrasound (HIFU) ablation of liver tumors. A three-dimensional acoustics-thermal-fluid coupling model is simulated to compute the temperature field in the hepatic cancerous region. The model is based on the linear Westervelt and bioheat equations as well as the non-linear Navier-Stokes equations for the liver parenchyma and blood vessels. The effect of acoustic streaming is also taken into account in the present HIFU simulation study. We found from this three-dimensional coupling study that in large blood vessel both the convective cooling and acoustic streaming can significantly change the temperature field and thermal lesion near blood vessels.
机译:这项研究调查了高强度聚焦超声(HIFU)肝肿瘤消融过程中血管对温度分布的影响。模拟了三维声-热-流体耦合模型,以计算肝癌区域的温度场。该模型基于肝实质和血管的线性Westervelt和生物热方程以及非线性Navier-Stokes方程。在当前的HIFU仿真研究中也考虑了声流的影响。我们从这项三维耦合研究中发现,在大血管中,对流冷却和声流都可以显着改变血管附近的温度场和热损伤。

著录项

  • 来源
    《International Journal of Heat and Mass Transfer》 |2012年第4期|p.1261-1270|共10页
  • 作者单位

    Department of Engineering Science and Ocean Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan, ROC;

    Department of Engineering Science and Ocean Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan, ROC,Taida Institute of Mathematical Science (TIMS), National Taiwan University, Taiwan, ROC;

    Institute of Biomedical Engineering, National Taiwan University, Taiwan, ROC;

    Medical Engineering Research Division, National Health Research Institute, Miaoli, Taiwan, ROC;

    IJIL. University of Paris # 6, Paris, France;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    acoustics-thermal-fluid coupling; HIFU; navier-stokes equations; acoustic streaming; liver tumor;

    机译:声-热-流体耦合;HIFU;斯托克斯方程;声流;肝肿瘤;

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