摘要
在不可逆电穿孔肿瘤治疗临床应用中,由于电场脉冲产生的消融区域较小,因此对于肿瘤尺寸较大的病患,需采用多电极治疗以实现肿瘤组织的完全消融。然而,目前多针治疗仍延用两针治疗效果的叠加进行预测,不利于制定精确的治疗计划。针对此问题,该文基于多电极作用下不可逆电穿孔肿瘤消融的电场分布与消融效果,建立适用于多电极治疗方式的数值模型。基于电导率模型分析,建立考虑多针治疗情况下累积效应的量效关系模型,并通过电压为500V、600V、700V、800V及1 000V的脉冲作用下马铃薯组织消融实验,比较不考虑多针累积效应的传统模型、叠加模型及量效关系模型的预测结果。结果表明量效关系模型的准确性和可行性(平均误差低于5.04%),能够用于多针治疗方式的术前治疗方案指导,为不可逆电穿孔临床应用中治疗方案的制定提供理论与数据支撑。
In the clinical application of irreversible electroporation tumor therapy, because the ablation area generated by the electric field pulse is small, multi-electrode treatment need to achieve complete ablation of tumor tissue for patients with large tumor size. However, at present, multi-needle treatment is still predicted by the superposition of two treatment effects, which is not conducive to the development of an accurate treatment-planning. Aiming at this problem, based on the electric field distribution and ablation effect of irreversible electroporation tumor ablation with multi-electrode, a numerical model suitable for multi-electrode treatment is established. Based on analysis of the conductivity model, a dose-effect relationship model considering the cumulative effect under multineedle treatment was established. The potato tissue ablation experiment was performed under the voltage of 500 V, 600 V, 700 V, 800 V and 1 000 V, and compared the prediction results of the traditional model, the superposition model and the dose-response model. The results show that the accuracy and feasibility of the dose-response model(mean error is less than 5.04%), and it can be used for pre-treatment of multi-needle treatment guidance, providing theoretical and data support for the development of treatment options for clinical applications of irreversible electroporation.
作者
姚陈果
郑爽
刘红梅
唐潇
董守龙
Yao Chenguo;Zheng Shuang;Liu Hongmei;Tang Xiao;Dong Shoulong(State Key Laboratory of Power Transmission Equipment&System Security and New Technology Chongqing University,Chongqing 400030,China)
出处
《电工技术学报》
EI
CSCD
北大核心
2020年第11期2491-2498,共8页
Transactions of China Electrotechnical Society
基金
国家自然科学基金项目(51877022)
重庆市研究生科研创新项目(CYB17011)
中央高校基本科研业务费(106112017CDJQJ158835)资助。
关键词
累积效应
量效关系模型
治疗计划
不可逆电穿孔
消融效果
Cumulative effect
dose-effect relationship model
treatment plan
irreversible electroporation
ablation effect