Harmonic Analysis for the Separation of Perfusion and Respiration in Electrical Impedance Tomography

Electrical Impedance Tomography (EIT) is mainly used to display information about the respiration of a patient. However, also cardiac-related signals are present, and, although they have small amplitude, can be distinguished by their frequencies. In this contribution, we report method based on harmonic analysis separate and perfusion. These described summation amplitude-modulated at different We mathematical background its application global impedance finally, show how it possible create frequency-related images highlighting either or perfusion inside an EIT video.