【摘要】 目的：为解决磁感应断层成像（magnetic induction tomography,MIT）系统检测时磁感应信号弱的问题，设计一种均匀场MIT系统。方法：以亥姆霍兹线圈作为激励端，对亥姆霍兹线圈的具体参数进行研究，根据亥姆霍兹线圈特性设计旋转扫描检测阵列，构建均匀场MIT系统。设计仿真实验，从磁感应信号强度和成像区域的灵敏度2个方面对均匀场MIT系统与传统系统进行对比评估。结果：均匀场MIT系统接收的磁感应信号在强度和对干扰目标位置的敏感度上均远优于传统MIT系统。与传统MIT系统相比，均匀场MIT系统成像区域的灵敏度整体提高了近2个数量级。结论：设计的均匀场MIT系统可从整体上提升被测体的磁感应信号，具有可行性。更多还原

【Abstract】 Objective To design a uniform field magnetic induction tomography(MIT) system to solve the problem of weak magnetic induction signals. Methods A Helmholtz coil was used as the excitation end, the specific parameters of the coil were investigated, and a uniform field MIT system was constructed by designing a rotating scan array based on the characteristics of the coil. Simulation experiments were carried out to evaluate the uniform field MIT system in comparison with the conventional system in terms of magnetic induction signal intensity and sensitivity of the imaging area. Results When compared with the conventional MIT system the system designed had the magnetic induction signals received much better in terms of intensity and sensitivity to the location of the interfering target, which enhanced the overall sensitivity of the imaging area by nearly two orders of magnitude. Conclusion The uniform field MIT system designed can improve magnetic induction signals of measured articles feasibly. [Chinese Medical Equipment Journal,2022,43(4):8-13,28]更多还原