文章摘要

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Title:: Research on methods to improve the magnetoacoustic imaging quality of electrical characteristics of biological tissue

Author(s):: LIN Junjie; WANG Yuheng; NIE Yuhui; YIN Tao; LIU Zhipeng; ZHANG Shunqi; （Institute of Biomedical Engineering, Chinese Academy of Medical Sciences& Peking Union Medical College, Tianjin 300192，China）

Keywords:: Electrical characteristic; Imaging; Magneto-acoustic tomography; Signal-to-noise ratio; Gallium-based liquid metal; Signal processing

摘要:: 由于生物组织的功能性变化早于结构性病变，而磁声成像不仅可展示功能性图像，还可获得较高的空间分辨率，有助于癌症等疾病的早期诊断。然而磁声信号较弱，信噪比易受信号衰减、超声干扰、电磁干扰的影响,为改善磁声电特性图像质量，研究学者提出了一系列方法。本文总结了近年来提高生物组织磁声电特性成像质量的代表性研究，分析了通过提高电磁激励、检测精度、信噪比在提高信号强度、质量及重建效率等方面的优劣势，并对其发展前景进行了展望。

Abstract:: The functional changes of biological tissues occur earlier than structural lesions. Magnetic acoustic imaging can not only provide functional imaging but also achieve high spatial resolution, so magnetoacoustoelectric imaging is helpful for the early diagnosis of diseases such as cancer. However, the magnetic acoustic signal is weak, the signal-to-noise ratio is affected by signal attenuation, ultrasonic interference, and electromagnetic interference. To improve the image quality of magnetic, acoustic, and electrical characteristics, researchers have proposed a series of methods. This paper summarizes the research progress in enhancing the quality of magnetoacoustic-electric imaging in recent years, analyzes the advantages and disadvantages of enhancing the strength of detection signal, the quality of acquisition signal and the efficiency of signal reconstruction by improving the electromagnetic excitation, detection accuracy and signal-to-noise ratio, and looks forward its development prospects.