Youngdae Cho1 and Hyoungsuk Yoo1
1Electronic Engineering, Hanyang University, Seoul, Korea, Republic of
1Electronic Engineering, Hanyang University, Seoul, Korea, Republic of
RF head coil with different configurations were simulated to analyze the impact of the geometrical shape of the coil on the transmit performance and SAR issues. The results show that a coil configuration similar to the head shape is required to optimize the transmit efficiency with allowable SAR.
Figure 3. |B1+| field and SAR maps of the axial, coronal, and sagittal slices of the head depending on the coil configuration. Note that 3 μT and 8.0 W/kg was normalized to 0 dB for |B1+| field and SAR maps, respectively. The total input power of each configuration was scaled such that the peak of local SAR on the whole head was 8.0 W/kg.
Figure 1. (a) Dimensions and components of the single MTL resonator. Simulated eight-channel MTL RF head coil of different configurations. Typical configuration and (b) adjusted configuration (1) with a circular shape, (c) configuration (2) with a elliptical shape, and (d) configuration (3) similar with the head shape.
