| 摘要 |
An apparatus 500 for determining one or more electromagnetic properties of a region of interest includes at least one measurement interface for receiving inductive measurements 410 of the region and capacitive measurements 420 of the region. A signal processor 430 calculates an estimate of electrical conductivity 520 based on at least the received one or more inductive measurements 410. This is used to determine a permittivity measurement 540 together with at least the received capacitive measurements 420. An output 440 is formed from a permeability distribution 525 and a permittivity distribution 540. Apparatus is also disclosed comprising a planar array of inductive sensors and a planar array of capacitive sensors forming the combined electrical impedance tomography (EIT) and electrical capacitance tomography (ECT) device. |
