A Subspace Preconditioned LSQR Gauss-Newton Method with a Constrained Line Search Path Applied to 3D Biomedical Microwave Imaging

Figure 12

Exact permittivity (top) and partially reconstructed permittivity inside the skin layer (bottom) for the numerical simple breast phantom with a 2 cm diameter tumor and with skin. Real part (left) and −imaginary part (right). The SNR of the data is 30 dB. Distances are in m.

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