Magnetic Resonance Wire Coil Losses Estimation with Finite-Difference Time-Domain Method

Radiofrequency (RF) coils are used to transmit and receive signals in magnetic resonance (MR) systems. Optimized RF coil design has take into account strategies maximize the performance by choosing sizes geometry for achieving best signal-to-noise ratio (SNR). In particular, conductor radiative loss contributions strongly affect SNR value, with first mainly playing a role low-field MR systems especially, while second could be dominant mechanism high-frequency tuned coils. This paper investigates accuracy of finite-difference time-domain (FDTD) method separately estimating contributions. Comparison finite element (FEM) analysis workbench measurements performed on home-built prototype permitted us validate simulation results. Moreover, this research, jointly literature data sample-induced losses estimation, demonstrates that an FDTD-based solver permits providing model various complicated geometries.