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Minimizing coupling between coils constitutes a major challenge in the design of flexible arrays for UHF MRI. Recently, Shielded-coaxial-cable coils (SCC) were shown to be flexible and intrinsically highly decoupled: however, the decoupling mechanism of SCC remains unclear. In this work, we use an high frequency Faraday-equivalent model of the induced voltage to examine coupling between two SCCs in different geometrical configurations. We show that lower coupling in SCC derives from both lower magnitude of electric and magnetic fields as compared to a loop coil, and we discuss the implications in the design of coils for MRI.
Costa et al. (Wed,) studied this question.