Abstract
As a ‘new organ’ in the human body, an interstitial structure distributes throughout the body and constitutes an operational framework of the interstitial fluid. Research into interstitial structure and its fluid behavior are conducive to revealing the operation law of interstitial fluid and establishing a complete operation system model for life fluid. In this paper, magnetoacoustic tomography with magnetic induction (MAT-MI) with liquid metal as a marker of the interstitial fluid channel is proposed as an imaging research method for the fluid behavior of interstitial structures. For the huge differences in the physical properties between liquid metal and bio-tissue, we studied the distribution characteristics of induction current in liquid metal under pulsed magnetic field stimulation, as well as the acoustic field propagation characteristics and the signal received by the transducer in acoustic inhomogeneous materials. Finally, experimental studies were carried out to verify the theoretical analysis. This work provided a basis for the extraction of effective measurement signals, which is conducive to the identification of acoustic field signals and the position imaging of the liquid metal.
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