This article focuses on comparison and improvements of techniques for conductivity image reconstruction in magnetic induction tomography (MIT). MIT imaging modality is a noncontact, portable, and inexpensive tool. In previous studies, generally, the real part (in‐phase component) and the imaginary part (quadrature component) of the induced voltages have been used in low‐ and high‐contrast conductivity imaging, respectively. However, techniques for conductivity image reconstruction in the middle‐contrast conductivity have not been well‐established in the MIT literature. In this work, the necessity of using both the real and imaginary parts of the induced voltages in MIT is described, and a technique which uses both the real and imaginary parts of the induced voltages for conductivity image reconstruction is presented. This technique includes conductivity image reconstruction in the middle range of conductivity. Results show the efficiency of the proposed technique compared to the previous technique especially in the middle‐contrast conductivity applications and in imaging regions with multitarget objectives with vastly different conductivity values.

中文翻译：

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MIT中电导率图像重建的比较和改进技术：仿真研究

本文重点介绍磁感应断层扫描（MIT）中电导率图像重建技术的比较和改进。MIT成像模式是一种非接触式，便携式且廉价的工具。在以前的研究中，通常，感应电压的实部（同相分量）和虚部（正交分量）分别用于低对比度和高对比度电导率成像。但是，在MIT文献中尚未建立起中等对比度电导率图像电导率重建技术。在这项工作中，描述了在MIT中同时使用感应电压的实部和虚部的必要性，并提出了一种使用感应电压的实部和虚部两者进行电导率图像重建的技术。该技术包括电导率中间范围内的电导率图像重建。结果表明，与以前的技术相比，该技术的效率更高，尤其是在中等对比度电导率应用以及具有多目标物镜且电导率值差异很大的成像区域中。