Bioimpedance spectroscopy tensor probe for anisotropic measurements
نویسندگان
چکیده
The tetrapolar electrode configuration used in bioimpedance suffers from negative sensitivity and is confounded by anisotropic tissue such as blood vessels or muscle and nerve fibres. We propose a circular array of electrodes to focus current directly underneath the probe and provide anisotropy information. We show that an implementation using 16 miniature electrodes is able to outperform the tetrapolar method in sensitivity and impedance estimation. The proposed method can also recover anisotropic conductivity tensors from experiments for the first time.
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