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Electrical impedance tomography is a non-invasive imaging technique capable of void fraction measurements of two-phase flows at high-acquisition rates. This paper presents the design features of an in-house developed prototype fast EIT system and a 16 electrodes sensor. With simplified system architecture, the voltage of the excitation signal is controlled and the current is measured. The proposed...
In the paper we describe a method to extract the topography of an impressed current for our bounded electrical impedance tomography (bEIT) studies. The frequency of the impressed current is low (up to a few hundred Hz), and is buried in background EEG and other noise. For the development of the extraction method, special consideration is given to maximize the signal-to-noise ratio. The standard lock-in...
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