| Medical imaging, one of the research branches in biomedical engineering, plays an important role in improving medical diagnosis and treatment.When alternative current flows through bio tissue in a static magnetic field, charged ion will oscillate at the same frequency as the current caused by Lorentz force, which generates acoustic signal. The acoustic signal contains the information of electric property of the bio-tissue, which can be detected by an acoustic sensor. According to this theory, the dissertation presents a noval bio tissue imaging method by scanning the tissue with electric and acoustic sensors in two orthogonal directions and detecting bio tissue character by coupling of magnetic acoustic and electric fields.In the dissertation, a new experimental system is optimized to image bio tissue coupling of magnetic, acoustic and electric fields. Besides imaging the gel physical model, the preliminary experiment with bio tissue is also carried out. And the result is favorable.The method is noninvasive and harmless to tissue, so that has potential to be applied as a noval medical imaging method for diagnosis.
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