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

Figure 6

−Imaginary part of the exact permittivity used to simulate the data at 1 GHz with a SNR of 30 dB (left) and of the reconstructed permittivity (right) for the adult’s arm phantom, in the -plane (top) and in three perpendicular planes (bottom). Distances are in m.

(a)

(b)

(c)

(d)