[1]王珂,张宏波,安博,等.磁流体的非均匀分布对磁感应热疗温度场的影响[J].郑州大学学报(工学版),2021,42(04):40-46.
 Analysis of the Influence of the Non-uniform Distribution of Magnetic Field and Magnetic Fluid on the Temperature Field in Magnetic Induction Hyperthermia[J].Journal of Zhengzhou University (Engineering Science),2021,42(04):40-46.
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磁流体的非均匀分布对磁感应热疗温度场的影响()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
42
期数:
2021年04期
页码:
40-46
栏目:
出版日期:
2021-07-30

文章信息/Info

Title:
Analysis of the Influence of the Non-uniform Distribution of Magnetic Field and Magnetic Fluid on the Temperature Field in Magnetic Induction Hyperthermia
作者:
王珂张宏波安博张璐王永庆
文献标志码:
A
摘要:
通过研究温度场分布的均匀性来改善磁感应热疗的治疗效果,探究磁场和磁流体非均匀分布对温度场的影响,建立了涉及磁场、产热模型及生物传热的模型。采用有限元方法进行数值求解,对产热模型进行优化,考虑磁场非均匀分布和磁流体注射后浓度分布的差异,从而获得准确的生物组织温度分布特征。结果表明:温差随着生物组织中心与磁场中心偏移距离的增大而增大,偏移10mm时会造成1℃的温度差异;非等剂量多点注射使温度场分布更加均匀,可有效避免组织内温度过高;注射体积不变,5点注射与7点注射相比,治疗温度42℃以上体积分数明显较小。
Abstract:
By studying the uniformity of the temperature field distribution to improve the therapeutic effect of magnetic induction hyperthermia, exploring the influence of the non-uniform distribution of magnetic fields and magnetic fluids on the temperature field, and establishing models involving magnetic fields, heat generation models and biological heat transfer. The finite element method is used for numerical solution, the heat generation model is optimized, and the non-uniform distribution of the magnetic field and the difference in the concentration distribution after the magnetic fluid injection are considered to obtain accurate biological tissue temperature distribution characteristics. The results show that the temperature difference increases with the increase of the offset distance between the center of the biological tissue and the center of the magnetic field. When the offset is 10mm, it will cause a temperature difference of 1℃. The non-iso-dose multi-point injection makes the temperature field distribution more uniform, which can effectively avoid excessive temperature in the tissue. The injection volume remains the same. Compared with the 7-point injection, the volume fraction at the treatment temperature above 42°C is significantly smaller.
更新日期/Last Update: 2021-08-26