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Simulation study of detecting conductivity of brain tissues with magnetic induction based on FDTD

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4 Author(s)
Qin Ming-Xin ; Sch. of Electron. Eng., Xidian Univ., Xi''an ; Jiao Li-Cheng ; Wang Hai-Bing ; Lv Hua

To further optimize and improve upon our MIT experiment system, the simulation study of the ideal physical model of our single channel measurement system of MIT is carried out with finite difference time domain (FDTD) method. According to antenna theory, an excitation coil similar to a helix is modeled as a stack of electric and magnetic sources. The current phase deviation of the single MIT-channel between the excitation and receiver coils is analysed with three ideal spherical models of the human brain. The brain model considers the skull, the cerebrospinal fluid, the brain tissue and an edema. The phase deviations are calculated for different models when using our coaxial coil system at 10 MHz. When assuming the model without edema the phase deviation of -0.03228712 rad is gotten. The phase deviation of -0.03155229 rad is generated when the spherical edema is considered

Published in:

Engineering in Medicine and Biology Society, 2005. IEEE-EMBS 2005. 27th Annual International Conference of the

Date of Conference:

17-18 Jan. 2006

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