Patent ID: 8105242

Claim:
A process for lung ventilation, the process comprising: providing a combination of an electric impedance tomography system, a computing unit and a respirator; recording a first image of pulmonary status with the electric impedance tomography system; determining a value of total area of a ventilated lung area by the computing unit from all image values, whose impedance changes exceed a predetermined value within a predetermined frequency range, and subsequently dividing the total area into at least two ventilated lung areas and determining an extent of ventilation homogeneity of the at least two ventilated lung areas by comparison of the impedance changes within these areas; increasing respiration pressure step by step, with the respirator, in case of a ventilation homogeneity rated as being too low; further recording a plurality of status images with said electric impedance tomograph system after said respiration pressure is increased; determining a respiration pressure at which a greatest possible ventilation homogeneity of the at least two ventilated lung areas occurs based on the total area values of said plurality of status images by means of the electric impedance tomography system; and lowering the respiration pressure step by step with the respirator, subsequent to said increasing respiration pressures step by step, until the computing unit detects a reduction of the ventilation homogeneity of the at least two ventilated lung areas, and subsequently again increasing the respiration pressure step by step with the respirator to a last value of the ventilated lung area at which no reduction of the ventilation homogeneity of the at least two ventilated lung areas occurred.