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Electrical Bioimpedance Measurement Technology

REN Chao-shi(Institute of Biomedical Engineering, Chinese Academy of MedicalSciences & Peking Union Medical College, Tianjin 300192)  
Based on the tissue impedance property of human body, the influences of simplified model, blood resistivity, cell reactance and breath disturb on veracity and repeatability of impedance rheogram measurement have been showed. Advantages and disadvantages of bioelectrical impedance analysis using whole body, subsection body, multi-frequency measurements have been compared. An effective evaluating method of gastric motility adopting impedance measurement has been proposed. The captivating application respects of Electrical Impedance Tomography, it represents the development orientation of impedance bioelectrical measurement, has been revealed.
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