A flexible 12-channel transceiver transmission line resonator (TLR) array for 7 T cardiac 1H MRI compatible with parallel transmission systems was developed. The size of the array is 38 cm x 28.5 cm with individual TLRs of 84 mm diameter. A decoupling ring-based inter-element decoupling technique was used where the basic TLR geometry is surrounded by a conducting ring. Its efficiency was demonstrated with the array bent on a torso phantom and a human torso (Sij < -16 dB). Acceleration factors up to 3 in bent configuration can be employed without significant SNR degradation (g-factor < 1.6).