Hardware Approaches to Practice of "in vivo" Bioimpedance Measurement in Various Noise Environment Conditions, in Treatment-and-Prophylactic Institutions

The electroimpedancemetry method is to determine the characteristics for the given type of a tissue, the values of polarization parameters, which are expressed through physical values of electroconductivity and the permittivity which determined in one´s turn by structural (base) and gradient (functional) physiological conditions of a tissue. An measuring instrument in structure of medical hardware system or the device, is always associated with the presence of broadband noise determined as change of components of a total tissues impedance, and additional physiological changes in an organism (in the area of measurement), and influence is direct on cables and elements of the measuring system. The bioimpedance measurement circuits on the basis of the medical systems which is working in difficult and complex noise conditions is realized.