Fig 4. 1g-SAR distributions in patient 12 (ID12) for the 1.5 T, 3 T, 7 T, and 10.5 T coils over an axial plane passing through the electrode contacts.

The coils’ input powers are adjusted (A) to generate a GHSAR of 3 W/kg and (B) to generate an average of B₁⁺ = 2 μT over an axial plane passing through the patient’s forehead. The B₁⁺ field distributions over the mentioned axial plane, which passes through the patient’s forehead, are also presented. Additionally, 1g-SAR_max, the average of B₁⁺ field, and GHSAR are also reported for all four coils.