IEEE Trans Biomed Eng. 2018 Mar;65(3):565-574. doi: 10.1109/TBME.2017.2704540. Epub 2017 May 16.
An internally combined volume surface integral equation (ICVSIE) for analyzing electromagnetic (EM) interactions with biological tissue and wide ranging diagnostic, therapeutic, and research applications, is proposed.
The ICVSIE is a system of integral equations in terms of volume and surface equivalent currents in biological tissue subject to fields produced by externally or internally positioned devices. The system is created by using equivalence principles and solved numerically; the resulting current values are used to evaluate scattered and total electric fields, specific absorption rates, and related quantities.
The validity, applicability, and efficiency of the ICVSIE are demonstrated by EM analysis of transcranial magnetic stimulation, magnetic resonance imaging, and neuromuscular electrical stimulation.
Unlike previous integral equations, the ICVSIE is stable regardless of the electric permittivities of the tissue or frequency of operation, providing an application-agnostic computational framework for EM-biomedical analysis.
Use of the general purpose and robust ICVSIE permits streamlining the development, deployment, and safety analysis of EM-biomedical technologies.
提出了一种用于分析生物组织与广泛的诊断、治疗和研究应用中的电磁（EM）相互作用的内部组合体积面积分方程（ICVSIE）。
ICVSIE 是一个积分方程组，涉及生物组织中的体积和表面等效电流，这些电流受到外部或内部定位设备产生的场的影响。该系统是通过使用等效原理创建并通过数值求解的；所得电流值用于评估散射和总电场、比吸收率和相关量。
通过对经颅磁刺激、磁共振成像和神经肌肉电刺激的 EM 分析，证明了 ICVSIE 的有效性、适用性和效率。
与以前的积分方程不同，ICVSIE 无论组织的介电常数或操作频率如何都是稳定的，为 EM-生物医学分析提供了一种与应用无关的计算框架。
通用且强大的 ICVSIE 的使用可以简化 EM 生物医学技术的开发、部署和安全分析。
