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Abstract

The invention relates to a measurement of tissue properties, in particular glucose, by measuring the response of the tissue to an applied electric field. The tissue is modeled by a System of homogeneous layers. In one approach, a plurality of electrical fields are generated in the tissue at different frequencies. For each of the fields, a signal depending on the dielectric permittivity as seen by the electrode arrangement at the frequency is measured, thereby generating a measured dataset. In another approach the different electrode configurations can be used to achieve different penetration depths in the desired layers. A function is then fitted to the dataset by varying at least some parameters of the function. These parameters describe the dispersion of the dielectric permittivity of a plurality of layers in the tissue. At least part of the parameters obtained in this fitting procedure are then used for determining the desired tissue property. Furthermore a combination of these two approaches can be used to optimize the uniqueness of the Solution of the fitting procedure for changes at a specific depth.

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First Claim