T.Yu. Anashina – Master, Department “Medical and Technical Information Technologies” (BMT-2),  Bauman Moscow State Technical University

E-mail: anashina-t@mail.ru

A.I. Malakhov – Ph.D. (Eng.), Associate Professor, Department “Medical and technical information technology” (BMT-2), Bauman Moscow State Technical University

E-mail: aimalakhov@bmstu.ru

Problem. The development of non-invasive lung research methods is necessary for the timely diagnosis of a number of pulmonary diseases. One of the most common lung diseases is chronic obstructive pulmonary disease (COPD). COPD develops in 11.8% of men and 8.5% of women over 40 years of age. From 4 to 15% of the adult population in the world suffer from this disease. The possibility of a more detailed diagnosis may allow selecting more effective treatment and improving the quality of patients life.

Purpose of work. The main goal of investigation is finding the most successful (from the point of view of amplitude signal parameters) electrodes location on the human chest in the study of the lungs by the electrical impedance method, presents the results of preliminary studies and considered the specific electrodes layout.

Results. This study involved healthy volunteers aged 20 and 25 years. The study assessed the differences in the shape and quantity of electrical impedance signals of healthy volunteers, depending on the electrodes location. The electrodes location on the patients chest for electrical impedance studies of the lung condition has been determined. The difference in the values of rheographic parameters was revealed both for different parts of one lung and for different lungs.

In the study of the electrical impedance signals basic component a difference in the amplitude indices for different parts of the left and right lung can be traced. It is shown that the lung lower area contributes to the ventilation process to a greater extent. Short-term load on the lungs in the form of a deep breath and maximum exhalation causes an increase in the amplitude of the respiratory waves by 1.3…2.4 times, and this effect is most pronounced in the upper zone of the lung.

Practical significance. The study is the first stage in the reopulmonographic measurements method development that are potentially applicable in clinical practice for assessing the state of lung and diagnosing pulmonary diseases. Further research into the potential of electrical impedance methods for measuring lung parameters will allow not only qualitative but also quantitative assessment of blood circulation and ventilation in different lungs areas.

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