Fig. 9. In-vivo and safety characterization of four-element LWA array.

Simulated ${\mathbf{B}}_{\mathbf{1}}^{\mathit{+}}$ for the four-element LWA array configuration (a) and a fractionated dipole array (b) in the transverse slice through the prostate of the human body Duke anatomical model for 1 W of accepted power. The corresponding SAR for the LWA array (c) and fractionated dipole array (d) in a the transverse slice through the maximum of local SAR. In-vivo ${\mathbf{B}}_{\mathbf{1}}^{\mathit{+}}$ map in healthy volunteer for LWA array (e) and the dipole array (f). g In-vivo T₁-weighted MR image (transverse slice through the prostate) of a healthy volunteer obtained using a four-element array of LWAs and h of dipoles.