The purpose of this work was to develop and investigate a dedicated transceiver 16-element antisymmetric loop array for high-resolution imaging of the ex-vivo porcine heart at 7T. The array was interfaced to a 7T scanner in parallel transmit (pTx) mode (8Tx/16Rx). Electromagnetic-field (EMF) simulations were performed with the antisymmetric array loaded with a spherical phantom and a human heart (Billie). The optimization of the B1+-shimming for both sTx and pTx applications was performed using simulated and experimental B1-maps. The array was successfully tested to acquire ultra-high resolution (0.1x0.1x0.8mm voxel) images of the post-infarction scar tissue in the excised pig heart.