The aim of this study was to investigate the crossed-dipole antenna by means of electromagnetic simulations and compare it with the surface quadrature head loop and volume head coils in terms of B1+ efficiency for 7T human brain imaging. The crossed-dipole antenna consists of two dipoles placed in a crossed form mounted upon/in an one-side conductor shielded dielectric. This antenna excites the circularly-polarized field and enhances the transmit efficiency in the occipital lobe in a larger FOV compared to the conventional coils. The comparison of the simulated B1+ maps of the coils showed that it is feasible to build it.
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