Three-dimensional contrast source inversion-electrical properties tomography (3-D CSI-EPT) is an iterative reconstruction method that estimates the electrical properties of tissue from transmit field magnetic resonance data. However, in order to bring 3-D CSI-EPT into practice for complex tissue structures and to understand the origin and effect of errors, insight in the sensitivities of reconstruction accuracy to the major error-sources is necessary. In this paper, different strategies for implementing 3-D CSI-EPT, including their iterative structure, are presented, of which the regularized implementation shows the most potential to be used in practice. Moreover, the influence of initialization, noise, stopping criteria, incident fields, B1-maps, transceive phase and domain truncation are discussed. We show that of all these different error-sources, initialization, accurate coil models and domain truncation have the most dramatic effect on electrical properties reconstructions in practice.

中文翻译：

---

模拟误差源对不同 3-D CSI-EPT 策略的影响


三维对比源反演电特性断层扫描 (3-D CSI-EPT) 是一种迭代重建方法，可根据发射场磁共振数据估计组织的电特性。然而，为了将 3-D CSI-EPT 应用于复杂组织结构的实践并了解误差的起源和影响，有必要深入了解重建精度对主要误差源的敏感性。本文提出了实现 3-D CSI-EPT 的不同策略，包括它们的迭代结构，其中正则化的实现在实践中显示出最有潜力。此外，还讨论了初始化、噪声、停止标准、入射场、B1-map、收发相位和域截断的影响。我们表明，在所有这些不同的误差源中，初始化、精确线圈模型和域截断对实践中的电性能重建具有最显着的影响。