Electrical mpedance tomography(EIT)measures the voltage signals of the remaining electrode pairs by applying a safe AC excitation current signal to the electrodes.With the help of reconstruction image algorithms,the acquired voltage data are applied to reconstruct the impedance distribution of the lungs.The EIT technique is real-time,non-invasive,and portable,and able to monitor lung function dynamically,which is beneficial in assisting in the diagnosis and treatment of lung diseases.This paper summarizes the development history and principle of lung function EIT technology,generalizes and analyzes the research progress of the EIT hardware system,image reconstruction algorithm and clinical application,and discusses and prospects the development direction and trend of the technology as well.
维普
万方数据