DEVICE FOR DETERMINING THE REGIONAL DISTRIBUTION OF A PARAMETER FOR LUNG PERFUSION

摘要

A device for determining the regional distribution of a parameter for lung perfusion includes an electrical impedance tomography unit with electrodes (E1, . . . EN), which can be placed on the thorax, that are connected to a control and analysis unit (2) and an administering device (4) for the intravenous administration of a conductivity contrast medium. The control and analysis unit (2) is configured to display changes in impedance distribution occurring as a consequence of the administration of conductivity contrast medium as a parameter for lung perfusion in the section plane as a function of time. The administering device (4) has a controllable dispensing device. The control and analysis unit and the dispensing device are connected with one another via a data link (3). A start time and an end time and a quantity of an administered bolus of the conductivity contrast medium are available to the control and analysis unit (2).

主权项

1. A device for determining the regional distribution of a parameter for lung perfusion in a section plane of the thorax, the device comprising:
an electrical impedance tomography unit comprising a plurality of electrodes, which can be placed on the thorax distributed around the circumference of the section plane, and a control and analysis unit, which is connected with the plurality of electrodes and is configured to consecutively feed alternating current or alternating voltage to each pair of electrodes to record voltage or current signals of the other electrodes as measured signals and to reconstruct the impedance distribution in the section plane from the measured signals; an administering device for intravenous administration of a conductivity contrast medium, wherein: the control and analysis unit is further configured to display the changes in the impedance distribution occurring as a consequence of the administration of conductivity contrast medium as a parameter for lung perfusion in the section plane as a function of time; the administering device has a controllable dispensing device and the control and analysis unit and the dispensing device are connected with one another via a data link and are configured such that at least a start time and an end time and a quantity of an administered bolus of the conductivity contrast medium are available to the control and analysis unit.