Assessment of a PML Boundary Condition for Simulating an MRI Radio Frequency Coil

Figure 3

(a) Measured 𝑆₁₁ of the coil (obtained with a network analyzer). H₁ is the mode of interest (mode 1); (b) calculated resonance pattern with 𝑁_𝑝=5 and 𝑁_𝑠=5 grids. Only one mode resonated at 174 MHz; (c) calculated resonance pattern with 𝑁_𝑝=10 and 𝑁_𝑠=8 grids. The number of modes and resonance frequencies is in excellent agreement with the measured 𝑆₁₁; (d) calculated resonance pattern with 𝑁_𝑝=10 and 𝑁_𝑠=1 grids. Mode 0 and mode 1 are split (e.g., mode 1 split into two peaks: H₁ and H^′₁.)

(a)

(b)

(c)

(d)