Figure 3.

Dielectric shimming simulation results: $B_1^{+}$ distribution for different relative dielectric permittivities (a), $B_1^{+}$ gain (b), left–right ratios (c), and intra-breast $B_1^{+}$ variabilities in percent in left (d) and right (e) breast. Simulated 10g-averaged local SAR (Normalized to 1W input power at each port) for quadrature drive (f), RF shimming only (g), dielectric shimming only (h), and combined RF and dielectric shimming (i).