科研之友
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摘要
Magnetic induction tomography (MIT) is one of the most popular methods in terms of imaging electrical properties (EPs) of biological tissues. However, the faint eddy current signal and heterogeneous distribution of exciting field cause low-resolution MIT images, and thus make MIT remain unapplied in clinical use. In MIT measuring process, except for the induced current signal, wave propagation also exists. In this paper, we derived the theory formulation about plane wave propagation in biological tissue, and simulated experiments executed by multilayer brain model. The results show the wave propagation effects in MIT should not be neglected. We proposed an open oscillation circuit to measure the wave propagation time in the biological tissue, and a preliminary experiment was implemented. The experimental results show it is feasible to measure wave propagation delay representing EPs. This work will supply a new technological approach to biological impedance tomography imaging theory.
- 出版日期2016-9
- 单位东北大学
