Yeung Sai Ho, Pradhan Raunaq, Feng Xiaohua, Zheng Yuanjin
School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore.
School of Electrical and Electronic Engineering, Nanyang Technological University.
IEEE Trans Biomed Eng. 2015 Nov;62(11):2602-2610. doi: 10.1109/TBME.2015.2408432. Epub 2015 Mar 4.
This paper presents the design and construction of a pair of figure-of-eight coils, coupled by magnetic resonance coupling (MRC), which could generate (150 V/m per Ampere) electric field at the focal points for electromagnetic therapy related applications. The E field generated at the targeted site would be significantly enhanced under the same amount of current flowing through the MRC figure-of-eight coils compared to normal coils, due to the superposition of E field contributed by the coils. Furthermore, the MRC figure-of-eight coil is designed and the results are verified in theory, simulation, and experiments. In the ex vivo tissue measurement, 35% current and 82% ohmic power improvements were observed. Since it can enhance the current and ohmic power, the MRC figure-of-eight coils are promising solutions for electromagnetic therapy applications. The potential applications of the coils include noninvasive radio frequency (RF) stimulation, thermoacoustic imaging, electromagnetic field therapies, and RF ablation, etc.
本文介绍了一对通过磁共振耦合（MRC）耦合的8字形线圈的设计与构建，该线圈可在焦点处产生（每安培150 V/m）的电场，用于电磁治疗相关应用。与普通线圈相比，在相同电流流经MRC 8字形线圈时，目标部位产生的电场会因线圈贡献的电场叠加而显著增强。此外，设计了MRC 8字形线圈，并通过理论、仿真和实验对结果进行了验证。在离体组织测量中，观察到电流提高了35%，欧姆功率提高了82%。由于MRC 8字形线圈能够增强电流和欧姆功率，因此是电磁治疗应用的有前景的解决方案。该线圈的潜在应用包括无创射频（RF）刺激、热声成像、电磁场疗法和射频消融等。
