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Cryosurgery of a biological tissue with multiprobe: effect of central cryoprobe

机译:具有多探针的生物组织的冷冻手术:中央冷冻探针的作用

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摘要

In this paper a three-dimensional numerical model for cryosurgery is developed to study the effect of central probe on the cryosurgery process. The irregular boundary resulting due to the presence of cryoprobes is taken care by body-fitted multi-block non-orthogonal grids. The thermo-physical properties of biological tissue are considered as a function of temperature as phase change takes place over a wide temperature range for the biological tissue. It has been found that the cooling power requirement by the single offset cryoprobe is greater than that of the central cryoprobe. However, the presence of central cryoprobe markedly influenced the cryosurgery process, resulting in an increase in the ablation ratio by 57 % with an insignificant increase in cooling power by 4.5 %. This information can be utilised effectively in computerised planning of a cryosurgery protocol.
机译:本文建立了三维冷冻手术数值模型,以研究中心探头对冷冻手术过程的影响。人体装配的多块非正交网格可保护由于存在低温探针而导致的不规则边界。生物相的热物理性质被认为是温度的函数,因为相变在整个生物相变的温度范围内发生。已经发现,单偏置冷冻探针的冷却功率需求大于中央冷冻探针的冷却功率需求。但是,中央冷冻探针的存在显着影响了冷冻手术过程,导致消融率增加了57%,而冷却能力却没有明显提高4.5%。该信息可以有效地用于冷冻手术方案的计算机化计划中。

著录项

  • 来源
    《Heat and mass transfer》 |2014年第12期|1751-1764|共14页
  • 作者

    Amitesh Kumar;

  • 作者单位

    Department of Mechanical Engineering, National Institute of Technology, Rourkela 769008, India;

  • 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

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