Study on Conductivity Distribution of Human Lung

This study is aim to analyze the conductivity data of cancerous tissues and normal tissues of human lung, establish the conductivity distribution model and investigate the conductivity characteristics of cancerous and normal tissues which provide the basic theory and reference data for medical research and clinical diagnosis of lung cancer. The lung cancer tissues and the normal tissues around the tumor from lung cancer patients were taken as specimens. Then the impedances of specimens were measured by impedance analyzer under the temperature and humidity at expected values. After calculating the conductivities of the specimens and determining the locations of the tumors, the conductivity distribution models of human cancerous and normal lung were established. As the excitation current frequency increases, the conductivity of the cancerous or normal tissue rises. And the conductivities of cancerous tissues are higher than that of normal tissues. For cancerous lung model, the conductivity of the left lung is higher than that of the right lung. While the contrary for normal lung model. There is a trend that the conductivity decreases from the upper lobe to the lower lobe of lung model.