Global Inhomogeneity index
EVENT
One-minute sequences of each EIT data were selected to calculate the GI. The minute containing the event marker "PCV" was selected. The GI was calculated as described by Zhao [The increasing inhomogeneous distribution of ventilation during controlled ventilation can be visualized with the GI. It quantifies the gas distribution in the lungs and thus enables good comparability. In healthy individuals with normal ventilation distribution, the quotient is 50%. In pathologically altered lungs, where there is unilateral pulmonary ventilation, the GI is 100% [