| 摘要 |
A device for depth-selective, non-invasive, local measurement of electrical impedance of organic and biological materials such as tissues from vegetable or animal origin comprising a probe (Fig. 1-3, 9a, 9b) with a number of electrodes (A, B, C) driven from an electronic control unit (F), in such a way that the electric current path defining the actual tissue under test is dependent upon a control signal. The probe is pressed toward the surface of the body part under test and by varying the control signal, it is possible to select the region under test within limits determined by the shapes, sizes and distances of the electrodes and the properties of the tissue under test. By means of combining results obtained with different control signals, it is possible to compute local impedance profiles. |
