Magnetoacoustic position imaging for liquid metal in animal interstitial structure

doi:10.1088/1674-1056/ab8207

Abstract Magnetoacoustic tomography with magnetic induction (MAT-MI), as a new kind of in-vivo imaging method, has potential application value in interstitial fluid research. In this paper, we propose the application of MAT-MI with liquid metal serving as a tracer of the interstitial structure to study its fluid behavior, and use it to implement the positional imaging of the spatial distribution of liquid metal. Owing to the particularity of liquid metal magnetoacoustic pressure (MAP) signals, we propose an envelope analysis method to extract the rising edge of the amplitude envelope of the detected waveform as effective position data. And for the first time, we propose the method of superpositing pixel matrix to achieve the position imaging of liquid metal. Finally, the positional imaging of the liquid metal sample embedded in the gel is achieved to have relatively accurate results. This study provides a method of effectively extracting data and implementing the position imaging for liquid metal in the interstitial structure in the frame of MAT-MI.

Keywords: magnetic acoustic tomography with magnetic induction (MAT-MI) liquid metal interstitial structure position imaging

Received: 09 January 2020
Revised: 13 February 2020
Accepted manuscript online:

PACS:	43.80.+p	(Bioacoustics)
	72.55.+s	(Magnetoacoustic effects)
	73.50.Rb	(Acoustoelectric and magnetoacoustic effects)
	75.90.+w	(Other topics in magnetic properties and materials)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61771448, 61427806, and 51937010), the National Key Research and Development Program of China (Grant No. 2018YFC0115200), and the Natural Science Fund from the Chinese Academy of Sciences (Grant Nos. ZDKYYQ20190002 and YJKYYQ20190005).

Corresponding Authors: Guo-Qiang Liu
E-mail: gqliu@mail.iee.ac.cn

Cite this article:

Xiao-He Zhao(赵筱赫), Guo-Qiang Liu(刘国强), Hui Xia(夏慧), Yan-Hong Li(李艳红) Magnetoacoustic position imaging for liquid metal in animal interstitial structure 2020 Chin. Phys. B 29 054305

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