Two antisymmetric, 16-elements, transceiver RF-coil arrays were developed for improved $$${B_1^+}$$$-shimming and parallel imaging for cardiac-MRI in humans at 7T. The first array (Design1) comprised of an 8-loops for both anterior and posterior sections. The second array (Design2) was composed of 12-loops for the anterior section and 4-loops for the posterior section. Electromagnetic-field (EMF) simulations were carried out for both arrays loaded with an elliptical phantom and two human models (Duke and Ella). Static-phase $$${B_1^+}$$$-shimming has been carried out for both arrays with two different optimization cost functions to maximize the transmit-efficiency and weighted combination of $$${B_1^+}$$$-field homogeneity and transmit-efficiency.
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