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

Figure 7

A view on the numerical child’s arm phantom, the investigation domain , and the dipole configuration. Dipole positions are indicated with dots and orientations with arrows. All dipoles act as transmitters and receivers. Distances are expressed in background wavelengths.