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Numerical analysis of local non-equilibrium heat transfer in layered spherical tissue during magnetic hyperthermia

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  • Kuo-Chi Liu
  • Yu-Ching Yang

Abstract

A solid multi-layered concentric sphere with Gaussian space source is considered as the tissue model for magnetic hyperthermia treatment. The generalized dual-phase-lag model of bioheat transfer is used to describe the behavior of heat transport in tissue in the hyperthermia treatment process for accounting the local non-equilibrium effect. The effects of blood perfusion with the transient temperature are included in the tissue model. The hybrid numerical scheme based on Laplace transform, change of variables, and the modified discretization technique is extended to solve the present problem. The analytical solution for constant heat generation in the inner sphere is presented and evidences the accuracy and rationality of the present numerical results. In an ideal hyperthermia treatment, all the diseased tissues should be selectively heated without affecting any healthy tissue. Attempting to achieve the ideal temperature distribution, the thermal dose is estimated at the specified condition. The corresponding thermal efficacy of tumor damage has also been assessed based on the Arrenius equation.

Suggested Citation

  • Kuo-Chi Liu & Yu-Ching Yang, 2020. "Numerical analysis of local non-equilibrium heat transfer in layered spherical tissue during magnetic hyperthermia," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 23(13), pages 968-980, October.
    • Handle: RePEc:taf:gcmbxx:v:23:y:2020:i:13:p:968-980
    DOI: 10.1080/10255842.2020.1779232
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