An electrical impedance tomography system for determining electric properties of an internal body part of a patient comprising - an electrode array locatable in electrical contact with the body of a patient - device for applying an electrical current or voltage between two or more electrodes of the electrode array and for measuring generated electrical voltages and/or currents between other pair combinations of the electrode array; - a computing unit comprising a data processor and a storage unit, - the storage unit comprising at least one reconstruction algorithm for use by the data processor for reconstructing the measured electrical voltages of the body part into electrical properties or changes of electrical properties, - the data processor adapted to output a representation of the reconstructed electrical properties, i.e. an EIT image, and wherein, - the data processor is adapted to generate and/or process a plurality of anatomical models descriptive of the body part, - the system comprises an input interface for inputting biometric data of the patient for use by the data processor, - the data processor is adapted to select one of the models from the plurality of anatomical models on account of the biometric data of the patient, - the data processor is adapted to use the selected model of the plurality of anatomical models for reconstructing the measured electrical voltages of the body part into electrical properties or changes of electrical properties, wherein the anatomical model is a statistics based anatomical model and is based on a statistical description of a population, wherein the data processor is adapted to output a cross-section image, comprising contours of the external body and internal organs, of the anatomical model in the plane of EIT measurement, and the processor is adapted to generate for display a superposed combination of the representation, i.e. the EIT image, onto the cross-section image of the anatomical model. - an electrode array locatable in electrical contact with the body of a patient - device for applying an electrical current or voltage between two or more electrodes of the electrode array and for measuring generated electrical voltages and/or currents between other pair combinations of the electrode array; - a computing unit comprising a data processor and a storage unit, - the storage unit comprising at least one reconstruction algorithm for use by the data processor for reconstructing the measured electrical voltages of the body part into electrical properties or changes of electrical properties, - the data processor adapted to output a representation of the reconstructed electrical properties, i.e. an EIT image, and - the data processor is adapted to generate and/or process a plurality of anatomical models descriptive of the body part, - the system comprises an input interface for inputting biometric data of the patient for use by the data processor, - the data processor is adapted to select one of the models from the plurality of anatomical models on account of the biometric data of the patient, - the data processor is adapted to use the selected model of the plurality of anatomical models for reconstructing the measured electrical voltages of the body part into electrical properties or changes of electrical properties, wherein the anatomical model is a statistics based anatomical model and is based on a statistical description of a population,