A 3D Finite-Difference BiCG Iterative Solver with the Fourier-Jacobi Preconditioner for the Anisotropic EIT/EEG Forward Problem
Figure 6
(a) Modeling of impact of the titanium surgical clip (the white “pi”) on the EEG forward solution in a “virtual” postoperational patient. A horizontally oriented dipole is of 0.6 cm from the clip. The shunting effect is getting more pronounced with the closer distance between the dipole and the clip and parallel orientation as it can be seen through the distortion of current stream lines (in black). (b) Impact of titanium surgical clip (the white “pi”) on the EEG forward solution in a “virtual” post-operational patient. 3D topography view (top) and 1D voltages (μV) versus channel number detailed quantitative comparison (bottom). A horizontally oriented dipole is of 0.6 cm from the clip. The shunting effect is getting more pronounced with the closer distance between the dipole and the clip and parallel orientation as it can be seen through the distortion of the equipotential lines on scalp.
