Several MRI scenarios can be studied by using electromagnetic simulation tools. The most common EM simulation software requires spatial discretization which can, for narrow objects like elongated conductors, become computationally heavy and time consuming. To avoid that, such objects are typically discretized suboptimally. Here, using FDTD simulations, we explore how these practices can often lead to errors which are not trivial to track and how simple changes in modelling can lead to significatively different results.
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