基于磁声电技术的肺部组织成像仿真研究

doi:10.19595/j.cnki.1000-6753.tces.201248

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Abstract COVID-19 can cause pulmonary edema and pulmonary consolidation, causing serious damage to the lungs. CT is radioactive, and ultrasound imaging is difficult to play a role in patients with mild symptoms. Magneto-acousto-electrical tomography (MAET) is a typical electrical characteristic imaging technology that couples electromagnetic field and ultrasound. It has the advantages of high spatial resolution and high contrast, and can detect early-stage of lung lesions. In this paper, the principle of MAET is introduced, and the pre-pulmonary edema or pre-consolidation model and complete pulmonary edema or pulmonary consolidation model are established through finite element software. The MAET signal of the model is analyzed, and the B-scan imaging is realized. The simulation results show that the gas in the lung tissue has a reflection effect on ultrasound. As the gas content in the lung tissue decreases, the amplitude of the pulse signal formed by the reflected ultrasound on the left boundary of the lung tissue gradually decreases, while on the right boundary of lung tissue, the amplitude of pulse signal generated by the increase of ultrasonic diffraction through gassed tissue increases. When the lungs are completely edema or consolidation, the lung tissue no longer contains gas, the pulse signal caused by reflected ultrasound disappears, and pulse signal of internal mass can be displayed. The potential of MAET is discussed in the clinical application of COVID-19 through simulation.

Key words： COVID-19 pulmonary edema pulmonary consolidation magneto-acousto-electrical tomography B scan image

Received: 18 September 2020

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	Li Cailian
	Li Yuanyuan
	Liu Guoqiang

Cite this article:

Li Cailian,Li Yuanyuan,Liu Guoqiang. Simulation of Lung Tissue Imaging Based on Magneto-Acousto-Electrical Technology[J]. Transactions of China Electrotechnical Society, 2021, 36(4): 732-737.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.201248 OR https://dgjsxb.ces-transaction.com/EN/Y2021/V36/I4/732

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