Inverse heat transfer prediction of the thermal parameters of tumors during cryosurgery

IF 4.9 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Thermal Sciences Pub Date : 2023-10-01 DOI:10.1016/j.ijthermalsci.2023.108453

Mohamed Hafid , Marcel Lacroix , Nacer Hebbir

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引用次数: 1

Abstract

An inverse heat transfer approach for predicting the moving freezing front and the temperature distribution inside tumors during cryosurgery is presented. By recording the time-varying temperature at the surface of the diseased tissues, the inverse method is able to estimate simultaneously the blood perfusion rate and the metabolic heat generation of the tumor. Once these thermal properties are determined, the temperature field and the moving freezing front are predicted with a direct method. The direct problem is solved with the one-dimension Pennes bioheat equation and the enthalpy method. The inverse model rests on the Levenberg-Marquardt Method (LMM) combined to the Broyden Method (BM). The following effects on the predictions of the inverse method are investigated: (i) the initialization of the unknown thermal properties; (ii) the thermal properties of the diseased tissues; (iii) the duration of cryosurgery; (iv) the temperature of the cryoprobe; (v) the noise level on the recorded temperatures; and (vi) the total number of recorded data. It is shown that the proposed inverse method remains accurate and stable for all cases investigated. Recommendations are made for the initialization of the parameters of the inverse method and for the total number of measurements.

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冷冻手术中肿瘤热参数的逆传热预测

提出了一种预测冷冻锋移动和肿瘤内温度分布的逆传热方法。逆法通过记录病变组织表面随时间变化的温度，可以同时估计肿瘤的血液灌注率和代谢产热。一旦确定了这些热特性，就可以用直接的方法预测温度场和移动冻结锋。直接问题用一维Pennes生物热方程和焓法求解。反演模型采用Levenberg-Marquardt法(LMM)和Broyden法(BM)相结合的方法。研究了以下对反演方法预测的影响:(1)未知热性质的初始化;(ii)病变组织的热性能;(iii)冷冻手术时间;(iv)冷冻探头的温度;(v)记录温度的噪音水平;(六)记录数据总数。结果表明，所提出的逆方法对所有的研究情况都是准确和稳定的。对逆法参数的初始化和测量的总次数提出了建议。

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来源期刊

International Journal of Thermal Sciences 工程技术-工程：机械

CiteScore

8.10

自引率

11.10%

发文量

531

审稿时长

55 days

期刊介绍： The International Journal of Thermal Sciences is a journal devoted to the publication of fundamental studies on the physics of transfer processes in general, with an emphasis on thermal aspects and also applied research on various processes, energy systems and the environment. Articles are published in English and French, and are subject to peer review. The fundamental subjects considered within the scope of the journal are: * Heat and relevant mass transfer at all scales (nano, micro and macro) and in all types of material (heterogeneous, composites, biological,...) and fluid flow * Forced, natural or mixed convection in reactive or non-reactive media * Single or multi–phase fluid flow with or without phase change * Near–and far–field radiative heat transfer * Combined modes of heat transfer in complex systems (for example, plasmas, biological, geological,...) * Multiscale modelling The applied research topics include: * Heat exchangers, heat pipes, cooling processes * Transport phenomena taking place in industrial processes (chemical, food and agricultural, metallurgical, space and aeronautical, automobile industries) * Nano–and micro–technology for energy, space, biosystems and devices * Heat transport analysis in advanced systems * Impact of energy–related processes on environment, and emerging energy systems The study of thermophysical properties of materials and fluids, thermal measurement techniques, inverse methods, and the developments of experimental methods are within the scope of the International Journal of Thermal Sciences which also covers the modelling, and numerical methods applied to thermal transfer.