Microwave-acoustic correlated imaging and circuit modelling of biological tissues

Microwave imaging and microwave-induced thermoacoustic imaging have attracted increasing research interest in recent decades. In this paper, we will introduce a novel imaging modality named microwave-acoustic correlated imaging to correlate both scattered microwave and thermoelastically induced acoustic wave, achieving enhanced imaging contrast and resolution using numerical simulations. In addition, an equivalent circuit is proposed to model the microwave-acoustic interaction with biological tissues, which is experimentally proved to show good agreement in both time and frequency domain.