Hybrid variation bioelectrical impedance imaging method
A technology of bioelectrical impedance and imaging method, which is applied in the field of measuring the conductivity of the chest cavity of the body, and can solve problems such as the inability to obtain lung electrical impedance reconstruction images, excessive smoothness, and step effect
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[0096] In this embodiment, in the two-dimensional positive problem simulation experiment, a normalized two-dimensional circular domain model is used, which simulates the human chest structure, and solves the distribution of the chest potential when the current is injected, wherein the radius of the circle is 15cm . Divide the normalized circular domain model into relatively uniform triangular grids. The electrode points are located on the edge of the circle. The isotropic conductivity distribution, the background conductivity is 1Ω·m, and the target conductivity is set to 2Ω·m. In this embodiment, the two-dimensional positive problem model of the chest cavity established by the finite element method has a total of 6400 elements and a total of 3281 nodes.
[0097] In this embodiment, in the three-dimensional positive problem simulation experiment, a chest cavity model is used. The model uses 64 circular electrodes, and the electrodes are placed on the side surface of the chest...
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